From 9f6d1f7086710aaf49a8ad97e3046a62801f8af6 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Philip=20J=C3=A4genstedt?= <philip@foolip.org>
Date: Sat, 6 Apr 2024 11:45:57 +0200
Subject: [PATCH 1/4] Generate lots more .dist.yml files

---
 feature-group-definitions/abs-sign.dist.yml   | 16 ++++
 .../accent-color.dist.yml                     | 21 +++++
 .../animation-composition.dist.yml            | 20 +++++
 .../aspect-ratio.dist.yml                     | 23 ++++++
 feature-group-definitions/autofill.dist.yml   | 19 +++++
 .../backdrop-filter.dist.yml                  | 17 ++++
 .../background-clip-text.dist.yml             | 20 +++++
 .../background-clip.dist.yml                  | 25 ++++++
 .../background-gradients.dist.yml             | 63 +++++++++++++++
 .../blocking-render.dist.yml                  | 26 ++++++
 .../calc-constants.dist.yml                   | 19 +++++
 feature-group-definitions/calc.dist.yml       | 24 ++++++
 .../check-visibility.dist.yml                 | 18 +++++
 .../color-scheme.dist.yml                     | 22 +++++
 feature-group-definitions/colrv1.dist.yml     | 16 ++++
 .../compression-streams.dist.yml              | 34 ++++++++
 .../constructed-stylesheets.dist.yml          | 22 +++++
 .../contain-intrinsic-size.dist.yml           | 25 ++++++
 .../container-style-queries.dist.yml          | 15 ++++
 .../declarative-shadow-dom.dist.yml           | 22 +++++
 .../details-name.dist.yml                     | 16 ++++
 feature-group-definitions/details.dist.yml    | 23 ++++++
 .../exp-functions.dist.yml                    | 23 ++++++
 .../font-optical-sizing.dist.yml              | 20 +++++
 .../font-palette-animation.dist.yml           | 14 ++++
 .../font-palette.dist.yml                     | 30 +++++++
 .../font-synthesis.dist.yml                   | 25 ++++++
 feature-group-definitions/fullscreen.dist.yml | 30 +++++++
 .../html-media-capture.dist.yml               | 15 ++++
 .../individual-transforms.dist.yml            | 25 ++++++
 .../intersection-observer.dist.yml            | 37 +++++++++
 feature-group-definitions/light-dark.dist.yml | 16 ++++
 feature-group-definitions/line-clamp.dist.yml | 24 ++++++
 .../linear-easing.dist.yml                    | 19 +++++
 feature-group-definitions/mathml.dist.yml     | 81 +++++++++++++++++++
 .../min-max-clamp.dist.yml                    | 22 +++++
 .../picture-in-picture.dist.yml               | 29 +++++++
 .../pointer-lock.dist.yml                     | 27 +++++++
 .../prefers-color-scheme.dist.yml             | 20 +++++
 .../round-mod-rem.dist.yml                    | 17 ++++
 .../scroll-snap.dist.yml                      | 44 ++++++++++
 .../scrollbar-color.dist.yml                  | 16 ++++
 .../scrollbar-gutter.dist.yml                 | 16 ++++
 .../scrollbar-width.dist.yml                  | 16 ++++
 .../search-input-type.dist.yml                | 20 +++++
 feature-group-definitions/search.dist.yml     | 18 +++++
 .../show-picker-input.dist.yml                | 24 ++++++
 .../show-picker-select.dist.yml               | 16 ++++
 feature-group-definitions/slot.dist.yml       | 32 ++++++++
 .../starting-style.dist.yml                   | 14 ++++
 feature-group-definitions/template.dist.yml   | 22 +++++
 .../text-fragments.dist.yml                   | 18 +++++
 .../text-spacing-trim.dist.yml                | 14 ++++
 .../text-wrap-balance.dist.yml                | 17 ++++
 .../text-wrap-pretty.dist.yml                 | 14 ++++
 .../transforms2d.dist.yml                     | 35 ++++++++
 .../transforms3d.dist.yml                     | 41 ++++++++++
 .../transition-behavior.dist.yml              | 16 ++++
 .../trig-functions.dist.yml                   | 25 ++++++
 .../user-pseudos.dist.yml                     | 19 +++++
 .../visual-viewport.dist.yml                  | 29 +++++++
 61 files changed, 1446 insertions(+)
 create mode 100644 feature-group-definitions/abs-sign.dist.yml
 create mode 100644 feature-group-definitions/accent-color.dist.yml
 create mode 100644 feature-group-definitions/animation-composition.dist.yml
 create mode 100644 feature-group-definitions/aspect-ratio.dist.yml
 create mode 100644 feature-group-definitions/autofill.dist.yml
 create mode 100644 feature-group-definitions/backdrop-filter.dist.yml
 create mode 100644 feature-group-definitions/background-clip-text.dist.yml
 create mode 100644 feature-group-definitions/background-clip.dist.yml
 create mode 100644 feature-group-definitions/background-gradients.dist.yml
 create mode 100644 feature-group-definitions/blocking-render.dist.yml
 create mode 100644 feature-group-definitions/calc-constants.dist.yml
 create mode 100644 feature-group-definitions/calc.dist.yml
 create mode 100644 feature-group-definitions/check-visibility.dist.yml
 create mode 100644 feature-group-definitions/color-scheme.dist.yml
 create mode 100644 feature-group-definitions/colrv1.dist.yml
 create mode 100644 feature-group-definitions/compression-streams.dist.yml
 create mode 100644 feature-group-definitions/constructed-stylesheets.dist.yml
 create mode 100644 feature-group-definitions/contain-intrinsic-size.dist.yml
 create mode 100644 feature-group-definitions/container-style-queries.dist.yml
 create mode 100644 feature-group-definitions/declarative-shadow-dom.dist.yml
 create mode 100644 feature-group-definitions/details-name.dist.yml
 create mode 100644 feature-group-definitions/details.dist.yml
 create mode 100644 feature-group-definitions/exp-functions.dist.yml
 create mode 100644 feature-group-definitions/font-optical-sizing.dist.yml
 create mode 100644 feature-group-definitions/font-palette-animation.dist.yml
 create mode 100644 feature-group-definitions/font-palette.dist.yml
 create mode 100644 feature-group-definitions/font-synthesis.dist.yml
 create mode 100644 feature-group-definitions/fullscreen.dist.yml
 create mode 100644 feature-group-definitions/html-media-capture.dist.yml
 create mode 100644 feature-group-definitions/individual-transforms.dist.yml
 create mode 100644 feature-group-definitions/intersection-observer.dist.yml
 create mode 100644 feature-group-definitions/light-dark.dist.yml
 create mode 100644 feature-group-definitions/line-clamp.dist.yml
 create mode 100644 feature-group-definitions/linear-easing.dist.yml
 create mode 100644 feature-group-definitions/mathml.dist.yml
 create mode 100644 feature-group-definitions/min-max-clamp.dist.yml
 create mode 100644 feature-group-definitions/picture-in-picture.dist.yml
 create mode 100644 feature-group-definitions/pointer-lock.dist.yml
 create mode 100644 feature-group-definitions/prefers-color-scheme.dist.yml
 create mode 100644 feature-group-definitions/round-mod-rem.dist.yml
 create mode 100644 feature-group-definitions/scroll-snap.dist.yml
 create mode 100644 feature-group-definitions/scrollbar-color.dist.yml
 create mode 100644 feature-group-definitions/scrollbar-gutter.dist.yml
 create mode 100644 feature-group-definitions/scrollbar-width.dist.yml
 create mode 100644 feature-group-definitions/search-input-type.dist.yml
 create mode 100644 feature-group-definitions/search.dist.yml
 create mode 100644 feature-group-definitions/show-picker-input.dist.yml
 create mode 100644 feature-group-definitions/show-picker-select.dist.yml
 create mode 100644 feature-group-definitions/slot.dist.yml
 create mode 100644 feature-group-definitions/starting-style.dist.yml
 create mode 100644 feature-group-definitions/template.dist.yml
 create mode 100644 feature-group-definitions/text-fragments.dist.yml
 create mode 100644 feature-group-definitions/text-spacing-trim.dist.yml
 create mode 100644 feature-group-definitions/text-wrap-balance.dist.yml
 create mode 100644 feature-group-definitions/text-wrap-pretty.dist.yml
 create mode 100644 feature-group-definitions/transforms2d.dist.yml
 create mode 100644 feature-group-definitions/transforms3d.dist.yml
 create mode 100644 feature-group-definitions/transition-behavior.dist.yml
 create mode 100644 feature-group-definitions/trig-functions.dist.yml
 create mode 100644 feature-group-definitions/user-pseudos.dist.yml
 create mode 100644 feature-group-definitions/visual-viewport.dist.yml

diff --git a/feature-group-definitions/abs-sign.dist.yml b/feature-group-definitions/abs-sign.dist.yml
new file mode 100644
index 00000000000..e216eb272e5
--- /dev/null
+++ b/feature-group-definitions/abs-sign.dist.yml
@@ -0,0 +1,16 @@
+# Generated from: abs-sign.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: abs() and sign()
+description: The `abs()` and `sign()` CSS functions compute the absolute value or the sign of the input.
+spec: https://drafts.csswg.org/css-values-4/#sign-funcs
+status:
+  baseline: false
+  support:
+    firefox: "118"
+    firefox_android: "118"
+    safari: "15.4"
+    safari_ios: "15.4"
+compat_features:
+  - css.types.abs
+  - css.types.sign
diff --git a/feature-group-definitions/accent-color.dist.yml b/feature-group-definitions/accent-color.dist.yml
new file mode 100644
index 00000000000..d2f7a5cf399
--- /dev/null
+++ b/feature-group-definitions/accent-color.dist.yml
@@ -0,0 +1,21 @@
+# Generated from: accent-color.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: accent-color
+description: The `accent-color` CSS property sets a color for checkboxes, radio buttons, and other form controls.
+spec: https://drafts.csswg.org/css-ui-4/#widget-accent
+usage_stats: https://chromestatus.com/metrics/css/timeline/popularity/695
+status:
+  baseline: low
+  baseline_low_date: 2022-03-14
+  support:
+    chrome: "93"
+    chrome_android: "93"
+    edge: "93"
+    firefox: "92"
+    firefox_android: "92"
+    safari: "15.4"
+    safari_ios: "15.4"
+compat_features:
+  - css.properties.accent-color
+  - css.properties.accent-color.auto
diff --git a/feature-group-definitions/animation-composition.dist.yml b/feature-group-definitions/animation-composition.dist.yml
new file mode 100644
index 00000000000..2a121f74a36
--- /dev/null
+++ b/feature-group-definitions/animation-composition.dist.yml
@@ -0,0 +1,20 @@
+# Generated from: animation-composition.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: animation-composition
+description: The `animation-composition` CSS property chooses how to combine animations that affect the same property.
+spec: https://drafts.csswg.org/css-animations-2/#animation-composition
+usage_stats: https://chromestatus.com/metrics/css/timeline/popularity/743
+status:
+  baseline: low
+  baseline_low_date: 2023-07-04
+  support:
+    chrome: "112"
+    chrome_android: "112"
+    edge: "112"
+    firefox: "115"
+    firefox_android: "115"
+    safari: "16"
+    safari_ios: "16"
+compat_features:
+  - css.properties.animation-composition
diff --git a/feature-group-definitions/aspect-ratio.dist.yml b/feature-group-definitions/aspect-ratio.dist.yml
new file mode 100644
index 00000000000..d03ff1ed6b1
--- /dev/null
+++ b/feature-group-definitions/aspect-ratio.dist.yml
@@ -0,0 +1,23 @@
+# Generated from: aspect-ratio.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: aspect-ratio
+description: "The `aspect-ratio` CSS property controls the width-to-height ratio of elements. For `<img>` and `<video>` elements, the `width` and `height` attributes used together with `height: auto` control the aspect ratio while the image/video is loading."
+spec: https://drafts.csswg.org/css-sizing-4/#aspect-ratio
+usage_stats: https://chromestatus.com/metrics/css/timeline/popularity/657
+status:
+  baseline: high
+  baseline_low_date: 2021-09-20
+  baseline_high_date: 2024-03-20
+  support:
+    chrome: "88"
+    chrome_android: "88"
+    edge: "88"
+    firefox: "89"
+    firefox_android: "89"
+    safari: "15"
+    safari_ios: "15"
+compat_features:
+  - css.properties.aspect-ratio
+  - html.elements.img.aspect_ratio_computed_from_attributes
+  - html.elements.video.aspect_ratio_computed_from_attributes
diff --git a/feature-group-definitions/autofill.dist.yml b/feature-group-definitions/autofill.dist.yml
new file mode 100644
index 00000000000..583f48d07e3
--- /dev/null
+++ b/feature-group-definitions/autofill.dist.yml
@@ -0,0 +1,19 @@
+# Generated from: autofill.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: ":autofill"
+description: "The `:autofill` pseudo-class matches `<input>` elements that have been filled in automatically by the browser."
+spec: https://html.spec.whatwg.org/multipage/semantics-other.html#selector-autofill
+status:
+  baseline: low
+  baseline_low_date: 2023-02-09
+  support:
+    chrome: "110"
+    chrome_android: "110"
+    edge: "110"
+    firefox: "86"
+    firefox_android: "86"
+    safari: "15"
+    safari_ios: "15"
+compat_features:
+  - css.selectors.autofill
diff --git a/feature-group-definitions/backdrop-filter.dist.yml b/feature-group-definitions/backdrop-filter.dist.yml
new file mode 100644
index 00000000000..11b8cc241b0
--- /dev/null
+++ b/feature-group-definitions/backdrop-filter.dist.yml
@@ -0,0 +1,17 @@
+# Generated from: backdrop-filter.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: backdrop-filter
+description: The `backdrop-filter` CSS property applies graphical effects such as blurring or color shifting to the area behind an element.
+spec: https://drafts.fxtf.org/filter-effects-2/#BackdropFilterProperty
+caniuse: css-backdrop-filter
+status:
+  baseline: false
+  support:
+    chrome: "76"
+    chrome_android: "76"
+    edge: "17"
+    firefox: "103"
+    firefox_android: "103"
+compat_features:
+  - css.properties.backdrop-filter
diff --git a/feature-group-definitions/background-clip-text.dist.yml b/feature-group-definitions/background-clip-text.dist.yml
new file mode 100644
index 00000000000..1be8e6b9206
--- /dev/null
+++ b/feature-group-definitions/background-clip-text.dist.yml
@@ -0,0 +1,20 @@
+# Generated from: background-clip-text.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+# Note: This is a subfeature of background-clip and may eventually merge into that.
+name: "background-clip: text"
+description: "The `background-clip: text` CSS property value draws the background underneath only the text in the element."
+spec: https://drafts.csswg.org/css-backgrounds-4/#background-clip
+status:
+  baseline: low
+  baseline_low_date: 2023-12-07
+  support:
+    chrome: "120"
+    chrome_android: "120"
+    edge: "120"
+    firefox: "49"
+    firefox_android: "49"
+    safari: "14"
+    safari_ios: "14"
+compat_features:
+  - css.properties.background-clip.text
diff --git a/feature-group-definitions/background-clip.dist.yml b/feature-group-definitions/background-clip.dist.yml
new file mode 100644
index 00000000000..ee1ccf24d6b
--- /dev/null
+++ b/feature-group-definitions/background-clip.dist.yml
@@ -0,0 +1,25 @@
+# Generated from: background-clip.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+# Note: This does not include `background-clip: text`, which is a separate
+# feature. Consider both if making any changes. They may eventually merge.
+name: background-clip
+description: "The `background-clip` CSS property sets the extent of the background: the padding box, the content box, or the default border box."
+spec: https://drafts.csswg.org/css-backgrounds-3/#background-clip
+status:
+  baseline: high
+  baseline_low_date: 2015-07-29
+  baseline_high_date: 2018-01-29
+  support:
+    chrome: "1"
+    chrome_android: "18"
+    edge: "12"
+    firefox: "4"
+    firefox_android: "4"
+    safari: "5"
+    safari_ios: "5"
+compat_features:
+  - css.properties.background-clip
+  - css.properties.background-clip.border-box
+  - css.properties.background-clip.content-box
+  - css.properties.background-clip.padding-box
diff --git a/feature-group-definitions/background-gradients.dist.yml b/feature-group-definitions/background-gradients.dist.yml
new file mode 100644
index 00000000000..34227f64739
--- /dev/null
+++ b/feature-group-definitions/background-gradients.dist.yml
@@ -0,0 +1,63 @@
+# Generated from: background-gradients.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: Background gradients
+description: The `linear-gradient()`, `radial-gradient()`, and `conic-gradient()` CSS functions create backgrounds that progress between two or more colors.
+spec: https://drafts.csswg.org/css-images-4/#gradients
+caniuse:
+  - css-gradients
+  - css-repeating-gradients
+  - css-conic-gradients
+status:
+  baseline: high
+  baseline_low_date: 2020-11-17
+  baseline_high_date: 2023-05-17
+  support:
+    chrome: "72"
+    chrome_android: "72"
+    edge: "79"
+    firefox: "83"
+    firefox_android: "83"
+    safari: "12.1"
+    safari_ios: "12.2"
+compat_features:
+  - css.properties.background-image.gradients
+  # Linear gradients
+  - css.types.image.gradient.linear-gradient
+  - css.types.image.gradient.linear-gradient.doubleposition
+  # - css.types.image.gradient.linear-gradient.hue_interpolation_method
+  # - css.types.image.gradient.linear-gradient.interpolation_color_space
+  - css.types.image.gradient.linear-gradient.interpolation_hints
+  - css.types.image.gradient.linear-gradient.to
+  - css.types.image.gradient.linear-gradient.unitless_0_angle
+  # Radial gradients
+  - css.types.image.gradient.radial-gradient
+  - css.types.image.gradient.radial-gradient.at
+  - css.types.image.gradient.radial-gradient.doubleposition
+  # - css.types.image.gradient.radial-gradient.hue_interpolation_method
+  # - css.types.image.gradient.radial-gradient.interpolation_color_space
+  - css.types.image.gradient.radial-gradient.interpolation_hints
+  # Conic gradients
+  - css.types.image.gradient.conic-gradient
+  - css.types.image.gradient.conic-gradient.doubleposition
+  # - css.types.image.gradient.conic-gradient.hue_interpolation_method
+  # - css.types.image.gradient.conic-gradient.interpolation_color_space
+  # Repeating linear gradients
+  - css.types.image.gradient.repeating-linear-gradient
+  - css.types.image.gradient.repeating-linear-gradient.doubleposition
+  # - css.types.image.gradient.repeating-linear-gradient.hue_interpolation_method
+  # - css.types.image.gradient.repeating-linear-gradient.interpolation_color_space
+  - css.types.image.gradient.repeating-linear-gradient.interpolation_hints
+  - css.types.image.gradient.repeating-linear-gradient.to
+  - css.types.image.gradient.repeating-linear-gradient.unitless_0_angle
+  # Repeating radial gradients
+  - css.types.image.gradient.repeating-radial-gradient
+  - css.types.image.gradient.repeating-radial-gradient.at
+  - css.types.image.gradient.repeating-radial-gradient.doubleposition
+  # - css.types.image.gradient.repeating-radial-gradient.hue_interpolation_method
+  # - css.types.image.gradient.repeating-radial-gradient.interpolation_color_space
+  - css.types.image.gradient.repeating-radial-gradient.interpolation_hints
+  # Repeating conic gradients
+  - css.types.image.gradient.repeating-conic-gradient
+  # - css.types.image.gradient.repeating-conic-gradient.hue_interpolation_method
+  # - css.types.image.gradient.repeating-conic-gradient.interpolation_color_space
diff --git a/feature-group-definitions/blocking-render.dist.yml b/feature-group-definitions/blocking-render.dist.yml
new file mode 100644
index 00000000000..cc763de89d6
--- /dev/null
+++ b/feature-group-definitions/blocking-render.dist.yml
@@ -0,0 +1,26 @@
+# Generated from: blocking-render.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: 'blocking="render"'
+description: 'The `blocking="render"` attribute for `<link>`, `<script>`, and `<style>` elements blocks rendering until the external script or stylesheet has been loaded. For `<link rel="expect">`, rendering is blocked until a specific element is in the DOM.'
+# A few additional "limitations" that aren't in the description but could potentially be:
+#  - Rendering is not blocked indefinitely, there are UA-defined timeouts
+#  - Only works for text/html documents
+#  - Only works in <head>
+#  - Doesn't work on non-async classic scripts
+#  - Only works for on <link rel=stylesheet> and <link rel=expect>, not other <link>s
+spec: https://html.spec.whatwg.org/multipage/urls-and-fetching.html#blocking-attributes
+usage_stats: https://chromestatus.com/metrics/feature/timeline/popularity/4183
+status:
+  baseline: false
+  support:
+    chrome: "105"
+    chrome_android: "105"
+    edge: "105"
+compat_features:
+  - api.HTMLLinkElement.blocking
+  - api.HTMLScriptElement.blocking
+  - api.HTMLStyleElement.blocking
+  - html.elements.link.blocking
+  - html.elements.script.blocking
+  - html.elements.style.blocking
diff --git a/feature-group-definitions/calc-constants.dist.yml b/feature-group-definitions/calc-constants.dist.yml
new file mode 100644
index 00000000000..383350b7c29
--- /dev/null
+++ b/feature-group-definitions/calc-constants.dist.yml
@@ -0,0 +1,19 @@
+# Generated from: calc-constants.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: calc() constants
+description: The `e`, `pi`, `infinity`, and `NaN` constants are accepted in CSS math functions such as `calc()`.
+spec: https://drafts.csswg.org/css-values-4/#calc-keywords
+status:
+  baseline: false
+  support:
+    firefox: "114"
+    firefox_android: "114"
+    safari: "16"
+    safari_ios: "16"
+compat_features:
+  - css.types.calc-constant
+  - css.types.calc-constant.NaN
+  - css.types.calc-constant.e
+  - css.types.calc-constant.infinity
+  - css.types.calc-constant.pi
diff --git a/feature-group-definitions/calc.dist.yml b/feature-group-definitions/calc.dist.yml
new file mode 100644
index 00000000000..63e283ae515
--- /dev/null
+++ b/feature-group-definitions/calc.dist.yml
@@ -0,0 +1,24 @@
+# Generated from: calc.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: calc()
+description: The `calc()` CSS function computes mathematical expressions such a `calc(100%/3 - 1em)`.
+spec: https://drafts.csswg.org/css-values-3/#calc-notation
+caniuse: calc
+status:
+  baseline: high
+  baseline_low_date: 2017-10-17
+  baseline_high_date: 2020-04-17
+  support:
+    chrome: "51"
+    chrome_android: "51"
+    edge: "16"
+    firefox: "48"
+    firefox_android: "48"
+    safari: "11"
+    safari_ios: "11"
+compat_features:
+  - css.types.calc
+  - css.types.calc.gradient_color_stops
+  - css.types.calc.nested
+  - css.types.calc.number_values
diff --git a/feature-group-definitions/check-visibility.dist.yml b/feature-group-definitions/check-visibility.dist.yml
new file mode 100644
index 00000000000..3b75f051fba
--- /dev/null
+++ b/feature-group-definitions/check-visibility.dist.yml
@@ -0,0 +1,18 @@
+# Generated from: check-visibility.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: checkVisibility()
+spec: https://drafts.csswg.org/cssom-view-1/#dom-element-checkvisibility
+status:
+  baseline: false
+  support:
+    chrome: "105"
+    chrome_android: "105"
+    edge: "105"
+    firefox: "106"
+    firefox_android: "106"
+    safari: preview
+compat_features:
+  - api.Element.checkVisibility
+  - api.Element.checkVisibility.options_checkOpacity_parameter
+  - api.Element.checkVisibility.options_checkVisibilityCSS_parameter
diff --git a/feature-group-definitions/color-scheme.dist.yml b/feature-group-definitions/color-scheme.dist.yml
new file mode 100644
index 00000000000..848adb42937
--- /dev/null
+++ b/feature-group-definitions/color-scheme.dist.yml
@@ -0,0 +1,22 @@
+# Generated from: color-scheme.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: color-scheme
+description: The `color-scheme` CSS property sets which color schemes (light or dark) an element uses and may prevent automatic dark mode adjustments by the browser.
+spec: https://drafts.csswg.org/css-color-adjust-1/#color-scheme-prop
+usage_stats: https://chromestatus.com/metrics/css/timeline/popularity/637
+status:
+  baseline: low
+  baseline_low_date: 2022-02-03
+  support:
+    chrome: "98"
+    chrome_android: "98"
+    edge: "98"
+    firefox: "96"
+    firefox_android: "96"
+    safari: "13"
+    safari_ios: "13"
+compat_features:
+  - css.properties.color-scheme
+  - css.properties.color-scheme.only_dark
+  - css.properties.color-scheme.only_light
diff --git a/feature-group-definitions/colrv1.dist.yml b/feature-group-definitions/colrv1.dist.yml
new file mode 100644
index 00000000000..de791f2825c
--- /dev/null
+++ b/feature-group-definitions/colrv1.dist.yml
@@ -0,0 +1,16 @@
+# Generated from: colrv1.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: COLRv1
+spec: https://www.iso.org/standard/87621.html
+caniuse: colr-v1
+status:
+  baseline: false
+  support:
+    chrome: "98"
+    chrome_android: "98"
+    edge: "98"
+    firefox: "107"
+    firefox_android: "107"
+compat_features:
+  - css.at-rules.font-face.OpenType_COLRv1
diff --git a/feature-group-definitions/compression-streams.dist.yml b/feature-group-definitions/compression-streams.dist.yml
new file mode 100644
index 00000000000..c32472d3a32
--- /dev/null
+++ b/feature-group-definitions/compression-streams.dist.yml
@@ -0,0 +1,34 @@
+# Generated from: compression-streams.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: Compression streams
+spec: https://wicg.github.io/compression/
+usage_stats:
+  - https://chromestatus.com/metrics/feature/timeline/popularity/3060 # CompressionStream
+  - https://chromestatus.com/metrics/feature/timeline/popularity/3061 # DecompressionStream
+status:
+  baseline: low
+  baseline_low_date: 2023-05-09
+  support:
+    chrome: "103"
+    chrome_android: "103"
+    edge: "103"
+    firefox: "113"
+    firefox_android: "113"
+    safari: "16.4"
+    safari_ios: "16.4"
+compat_features:
+  - api.CompressionStream
+  - api.CompressionStream.CompressionStream
+  - api.CompressionStream.CompressionStream.deflate
+  - api.CompressionStream.CompressionStream.deflate-raw
+  - api.CompressionStream.CompressionStream.gzip
+  - api.CompressionStream.readable
+  - api.CompressionStream.writable
+  - api.DecompressionStream
+  - api.DecompressionStream.DecompressionStream
+  - api.DecompressionStream.DecompressionStream.deflate
+  - api.DecompressionStream.DecompressionStream.deflate-raw
+  - api.DecompressionStream.DecompressionStream.gzip
+  - api.DecompressionStream.readable
+  - api.DecompressionStream.writable
diff --git a/feature-group-definitions/constructed-stylesheets.dist.yml b/feature-group-definitions/constructed-stylesheets.dist.yml
new file mode 100644
index 00000000000..e60c3e5ad1b
--- /dev/null
+++ b/feature-group-definitions/constructed-stylesheets.dist.yml
@@ -0,0 +1,22 @@
+# Generated from: constructed-stylesheets.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: Constructed stylesheets
+description: The `CSSStyleSheet` constructor creates a new stylesheet which can be shared between a document and multiple shadow roots using `adoptedStyleSheets`.
+spec:
+  - https://drafts.csswg.org/cssom-1/#dom-cssstylesheet-cssstylesheet
+  - https://drafts.csswg.org/cssom-1/#dom-documentorshadowroot-adoptedstylesheets
+usage_stats: https://chromestatus.com/metrics/feature/timeline/popularity/2846
+status:
+  baseline: false
+  support:
+    firefox: "101"
+    firefox_android: "101"
+    safari: "16.4"
+    safari_ios: "16.4"
+compat_features:
+  - api.CSSStyleSheet.CSSStyleSheet
+  - api.CSSStyleSheet.replace
+  - api.CSSStyleSheet.replaceSync
+  - api.Document.adoptedStyleSheets
+  - api.ShadowRoot.adoptedStyleSheets
diff --git a/feature-group-definitions/contain-intrinsic-size.dist.yml b/feature-group-definitions/contain-intrinsic-size.dist.yml
new file mode 100644
index 00000000000..7f2964bbc0f
--- /dev/null
+++ b/feature-group-definitions/contain-intrinsic-size.dist.yml
@@ -0,0 +1,25 @@
+# Generated from: contain-intrinsic-size.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: contain-intrinsic-size
+spec: https://drafts.csswg.org/css-sizing-4/#intrinsic-size-override
+# Shown as "intrinsic-size" on chromestatus.com, but 651 is contain-intrinsic-size.
+usage_stats: https://chromestatus.com/metrics/css/timeline/popularity/651
+status:
+  baseline: low
+  baseline_low_date: 2023-09-18
+  support:
+    chrome: "117"
+    chrome_android: "117"
+    edge: "117"
+    firefox: "117"
+    firefox_android: "117"
+    safari: "17"
+    safari_ios: "17"
+compat_features:
+  - css.properties.contain-intrinsic-block-size
+  - css.properties.contain-intrinsic-height
+  - css.properties.contain-intrinsic-inline-size
+  - css.properties.contain-intrinsic-size
+  - css.properties.contain-intrinsic-size.auto_none
+  - css.properties.contain-intrinsic-width
diff --git a/feature-group-definitions/container-style-queries.dist.yml b/feature-group-definitions/container-style-queries.dist.yml
new file mode 100644
index 00000000000..c76801162ca
--- /dev/null
+++ b/feature-group-definitions/container-style-queries.dist.yml
@@ -0,0 +1,15 @@
+# Generated from: container-style-queries.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: Container style queries
+spec: https://drafts.csswg.org/css-contain-3/#style-container
+caniuse: css-container-queries-style
+usage_stats: https://chromestatus.com/metrics/feature/timeline/popularity/4550
+status:
+  baseline: false
+  support:
+    chrome: "111"
+    chrome_android: "111"
+    edge: "111"
+compat_features:
+  - css.at-rules.container.style_queries_for_custom_properties
diff --git a/feature-group-definitions/declarative-shadow-dom.dist.yml b/feature-group-definitions/declarative-shadow-dom.dist.yml
new file mode 100644
index 00000000000..058de174e01
--- /dev/null
+++ b/feature-group-definitions/declarative-shadow-dom.dist.yml
@@ -0,0 +1,22 @@
+# Generated from: declarative-shadow-dom.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: Declarative shadow DOM
+description: The `shadowrootmode` attribute on `<template>` creates a shadow root without the use of JavaScript. It is a declarative alternative to the `attachShadow()` method.
+spec: https://html.spec.whatwg.org/multipage/scripting.html#attr-template-shadowrootmode
+caniuse: declarative-shadow-dom
+usage_stats: https://chromestatus.com/metrics/feature/timeline/popularity/4421
+status:
+  baseline: low
+  baseline_low_date: 2024-02-20
+  support:
+    chrome: "111"
+    chrome_android: "111"
+    edge: "111"
+    firefox: "123"
+    firefox_android: "123"
+    safari: "16.4"
+    safari_ios: "16.4"
+compat_features:
+  - api.HTMLTemplateElement.shadowRootMode
+  - html.elements.template.shadowrootmode
diff --git a/feature-group-definitions/details-name.dist.yml b/feature-group-definitions/details-name.dist.yml
new file mode 100644
index 00000000000..79f499eff09
--- /dev/null
+++ b/feature-group-definitions/details-name.dist.yml
@@ -0,0 +1,16 @@
+# Generated from: details-name.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: Mutually exclusive <details> elements
+spec: https://html.spec.whatwg.org/multipage/interactive-elements.html#attr-details-name
+status:
+  baseline: false
+  support:
+    chrome: "120"
+    chrome_android: "120"
+    edge: "120"
+    safari: "17.2"
+    safari_ios: "17.2"
+compat_features:
+  - api.HTMLDetailsElement.name
+  - html.elements.details.name
diff --git a/feature-group-definitions/details.dist.yml b/feature-group-definitions/details.dist.yml
new file mode 100644
index 00000000000..fb46a63beb0
--- /dev/null
+++ b/feature-group-definitions/details.dist.yml
@@ -0,0 +1,23 @@
+# Generated from: details.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: <details>
+spec: https://html.spec.whatwg.org/multipage/interactive-elements.html#the-details-element
+status:
+  baseline: high
+  baseline_low_date: 2020-01-15
+  baseline_high_date: 2022-07-15
+  support:
+    chrome: "36"
+    chrome_android: "36"
+    edge: "79"
+    firefox: "49"
+    firefox_android: "49"
+    safari: "10.1"
+    safari_ios: "10.3"
+compat_features:
+  - api.HTMLDetailsElement
+  - api.HTMLDetailsElement.open
+  - api.HTMLDetailsElement.toggle_event
+  - html.elements.details
+  - html.elements.details.open
diff --git a/feature-group-definitions/exp-functions.dist.yml b/feature-group-definitions/exp-functions.dist.yml
new file mode 100644
index 00000000000..06fafa2d827
--- /dev/null
+++ b/feature-group-definitions/exp-functions.dist.yml
@@ -0,0 +1,23 @@
+# Generated from: exp-functions.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: pow(), sqrt(), hypot(), log(), and exp()
+description: The `pow()`, `sqrt()`, `hypot()`, `log()`, and `exp()` CSS functions compute various exponential functions.
+spec: https://drafts.csswg.org/css-values-4/#exponent-funcs
+status:
+  baseline: low
+  baseline_low_date: 2023-12-07
+  support:
+    chrome: "120"
+    chrome_android: "120"
+    edge: "120"
+    firefox: "118"
+    firefox_android: "118"
+    safari: "15.4"
+    safari_ios: "15.4"
+compat_features:
+  - css.types.pow
+  - css.types.sqrt
+  - css.types.hypot
+  - css.types.log
+  - css.types.exp
diff --git a/feature-group-definitions/font-optical-sizing.dist.yml b/feature-group-definitions/font-optical-sizing.dist.yml
new file mode 100644
index 00000000000..4d0563b1258
--- /dev/null
+++ b/feature-group-definitions/font-optical-sizing.dist.yml
@@ -0,0 +1,20 @@
+# Generated from: font-optical-sizing.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: font-optical-sizing
+spec: https://drafts.csswg.org/css-fonts-4/#font-optical-sizing-def
+usage_stats: https://chromestatus.com/metrics/css/timeline/popularity/647
+status:
+  baseline: high
+  baseline_low_date: 2019-12-17
+  baseline_high_date: 2022-06-17
+  support:
+    chrome: "79"
+    chrome_android: "79"
+    edge: "17"
+    firefox: "62"
+    firefox_android: "62"
+    safari: "11"
+    safari_ios: "11"
+compat_features:
+  - css.properties.font-optical-sizing
diff --git a/feature-group-definitions/font-palette-animation.dist.yml b/feature-group-definitions/font-palette-animation.dist.yml
new file mode 100644
index 00000000000..1a2cdb42f4a
--- /dev/null
+++ b/feature-group-definitions/font-palette-animation.dist.yml
@@ -0,0 +1,14 @@
+# Generated from: font-palette-animation.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: font-palette animation
+spec: https://drafts.csswg.org/css-fonts-4/#font-palette-prop
+usage_stats: https://chromestatus.com/metrics/css/timeline/animated/709
+status:
+  baseline: false
+  support:
+    chrome: "121"
+    chrome_android: "121"
+    edge: "121"
+compat_features:
+  - css.properties.font-palette.palette-mix_function
diff --git a/feature-group-definitions/font-palette.dist.yml b/feature-group-definitions/font-palette.dist.yml
new file mode 100644
index 00000000000..130def91678
--- /dev/null
+++ b/feature-group-definitions/font-palette.dist.yml
@@ -0,0 +1,30 @@
+# Generated from: font-palette.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: font-palette and @font-palette-values
+spec:
+  - https://drafts.csswg.org/css-fonts-4/#font-palette-prop
+  - https://drafts.csswg.org/css-fonts-4/#font-palette-values
+usage_stats: https://chromestatus.com/metrics/css/timeline/popularity/709
+status:
+  baseline: low
+  baseline_low_date: 2022-11-15
+  support:
+    chrome: "101"
+    chrome_android: "101"
+    edge: "101"
+    firefox: "107"
+    firefox_android: "107"
+    safari: "15.4"
+    safari_ios: "15.4"
+compat_features:
+  - api.CSSFontPaletteValuesRule
+  - api.CSSFontPaletteValuesRule.basePalette
+  - api.CSSFontPaletteValuesRule.fontFamily
+  - api.CSSFontPaletteValuesRule.name
+  - api.CSSFontPaletteValuesRule.overrideColors
+  - css.at-rules.font-palette-values
+  - css.at-rules.font-palette-values.base-palette
+  - css.at-rules.font-palette-values.font-family
+  - css.at-rules.font-palette-values.override-colors
+  - css.properties.font-palette
diff --git a/feature-group-definitions/font-synthesis.dist.yml b/feature-group-definitions/font-synthesis.dist.yml
new file mode 100644
index 00000000000..13fb8833852
--- /dev/null
+++ b/feature-group-definitions/font-synthesis.dist.yml
@@ -0,0 +1,25 @@
+# Generated from: font-synthesis.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: font-synthesis
+spec: https://drafts.csswg.org/css-fonts-4/#font-synthesis-intro
+usage_stats:
+  - https://chromestatus.com/metrics/css/timeline/popularity/700 # font-synthesis-weight
+  - https://chromestatus.com/metrics/css/timeline/popularity/701 # font-synthesis-style
+  - https://chromestatus.com/metrics/css/timeline/popularity/703 # font-synthesis-small-caps
+  - https://chromestatus.com/metrics/css/timeline/popularity/704 # font-synthesis
+status:
+  baseline: false
+  support:
+    firefox: "118"
+    firefox_android: "118"
+compat_features:
+  - css.properties.font-synthesis-position
+  - css.properties.font-synthesis-small-caps
+  - css.properties.font-synthesis-style
+  - css.properties.font-synthesis-weight
+  - css.properties.font-synthesis
+  - css.properties.font-synthesis.position
+  - css.properties.font-synthesis.small-caps
+  - css.properties.font-synthesis.style
+  - css.properties.font-synthesis.weight
diff --git a/feature-group-definitions/fullscreen.dist.yml b/feature-group-definitions/fullscreen.dist.yml
new file mode 100644
index 00000000000..7e122198d63
--- /dev/null
+++ b/feature-group-definitions/fullscreen.dist.yml
@@ -0,0 +1,30 @@
+# Generated from: fullscreen.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: Fullscreen API
+spec: https://fullscreen.spec.whatwg.org/
+caniuse: fullscreen
+status:
+  baseline: false
+  support:
+    edge: "79"
+    firefox: "64"
+    firefox_android: "64"
+compat_features:
+  - api.Document.exitFullscreen
+  - api.Document.exitFullscreen.returns_promise
+  - api.Document.fullscreen
+  - api.Document.fullscreenchange_event
+  - api.Document.fullscreenElement
+  - api.Document.fullscreenEnabled
+  - api.Document.fullscreenerror_event
+  - api.Element.fullscreenchange_event
+  - api.Element.fullscreenerror_event
+  - api.Element.requestFullscreen
+  - api.Element.requestFullscreen.returns_promise
+  - api.HTMLIFrameElement.allowFullscreen
+  - api.ShadowRoot.fullscreenElement
+  - css.selectors.backdrop.fullscreen
+  - css.selectors.fullscreen
+  - css.selectors.fullscreen.all_elements
+  - html.elements.iframe.allowfullscreen
diff --git a/feature-group-definitions/html-media-capture.dist.yml b/feature-group-definitions/html-media-capture.dist.yml
new file mode 100644
index 00000000000..87633c7004e
--- /dev/null
+++ b/feature-group-definitions/html-media-capture.dist.yml
@@ -0,0 +1,15 @@
+# Generated from: html-media-capture.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: HTML media capture
+spec: https://w3c.github.io/html-media-capture/
+caniuse: html-media-capture
+status:
+  baseline: false
+  support:
+    chrome_android: "25"
+    firefox_android: "79"
+    safari_ios: "10"
+compat_features:
+  - api.HTMLInputElement.capture
+  - html.elements.input.capture
diff --git a/feature-group-definitions/individual-transforms.dist.yml b/feature-group-definitions/individual-transforms.dist.yml
new file mode 100644
index 00000000000..a95fef61dce
--- /dev/null
+++ b/feature-group-definitions/individual-transforms.dist.yml
@@ -0,0 +1,25 @@
+# Generated from: individual-transforms.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: Individual transform properties
+description: Transform elements with separate `translate`, `rotate`, and `scale` CSS properties.
+spec: https://drafts.csswg.org/css-transforms-2/#individual-transforms
+usage_stats:
+  - https://chromestatus.com/metrics/css/timeline/popularity/504 # translate
+  - https://chromestatus.com/metrics/css/timeline/popularity/505 # rotate
+  - https://chromestatus.com/metrics/css/timeline/popularity/506 # scale
+status:
+  baseline: low
+  baseline_low_date: 2022-08-09
+  support:
+    chrome: "104"
+    chrome_android: "104"
+    edge: "104"
+    firefox: "72"
+    firefox_android: "79"
+    safari: "14.1"
+    safari_ios: "14.5"
+compat_features:
+  - css.properties.rotate
+  - css.properties.scale
+  - css.properties.translate
diff --git a/feature-group-definitions/intersection-observer.dist.yml b/feature-group-definitions/intersection-observer.dist.yml
new file mode 100644
index 00000000000..23fdfaec3d3
--- /dev/null
+++ b/feature-group-definitions/intersection-observer.dist.yml
@@ -0,0 +1,37 @@
+# Generated from: intersection-observer.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: Intersection observer
+spec: https://w3c.github.io/IntersectionObserver/
+caniuse: intersectionobserver
+usage_stats: https://chromestatus.com/metrics/feature/timeline/popularity/1368
+status:
+  baseline: high
+  baseline_low_date: 2019-03-25
+  baseline_high_date: 2021-09-25
+  support:
+    chrome: "58"
+    chrome_android: "58"
+    edge: "16"
+    firefox: "55"
+    firefox_android: "55"
+    safari: "12.1"
+    safari_ios: "12.2"
+compat_features:
+  - api.IntersectionObserver
+  - api.IntersectionObserver.IntersectionObserver
+  - api.IntersectionObserver.disconnect
+  - api.IntersectionObserver.observe
+  - api.IntersectionObserver.root
+  - api.IntersectionObserver.rootMargin
+  - api.IntersectionObserver.takeRecords
+  - api.IntersectionObserver.thresholds
+  - api.IntersectionObserver.unobserve
+  - api.IntersectionObserverEntry
+  - api.IntersectionObserverEntry.boundingClientRect
+  - api.IntersectionObserverEntry.intersectionRatio
+  - api.IntersectionObserverEntry.intersectionRect
+  - api.IntersectionObserverEntry.isIntersecting
+  - api.IntersectionObserverEntry.rootBounds
+  - api.IntersectionObserverEntry.target
+  - api.IntersectionObserverEntry.time
diff --git a/feature-group-definitions/light-dark.dist.yml b/feature-group-definitions/light-dark.dist.yml
new file mode 100644
index 00000000000..27c99ae25bd
--- /dev/null
+++ b/feature-group-definitions/light-dark.dist.yml
@@ -0,0 +1,16 @@
+# Generated from: light-dark.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: light-dark()
+description: The `light-dark()` CSS function accepts two colors and uses one depending on the current color scheme.
+spec: https://drafts.csswg.org/css-color-5/#light-dark
+status:
+  baseline: false
+  support:
+    chrome: "123"
+    chrome_android: "123"
+    firefox: "120"
+    firefox_android: "120"
+    safari: preview
+compat_features:
+  - css.types.color.light-dark
diff --git a/feature-group-definitions/line-clamp.dist.yml b/feature-group-definitions/line-clamp.dist.yml
new file mode 100644
index 00000000000..fb2ca7b8a47
--- /dev/null
+++ b/feature-group-definitions/line-clamp.dist.yml
@@ -0,0 +1,24 @@
+# Generated from: line-clamp.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: line-clamp
+spec: https://drafts.csswg.org/css-overflow-3/#line-clamp
+caniuse: css-line-clamp
+status:
+  baseline: high
+  baseline_low_date: 2019-07-09
+  baseline_high_date: 2022-01-09
+  support:
+    chrome: "6"
+    chrome_android: "18"
+    edge: "17"
+    firefox: "68"
+    firefox_android: "68"
+    safari: "5"
+    safari_ios: "4.2"
+compat_features:
+  # This is a weird one! Specified with a prefix:
+  # https://drafts.csswg.org/css-overflow-4/#propdef--webkit-line-clamp
+  - css.properties.-webkit-line-clamp
+  # This doesn't exist yet, but might in the future:
+  # - css.properties.line-clamp
diff --git a/feature-group-definitions/linear-easing.dist.yml b/feature-group-definitions/linear-easing.dist.yml
new file mode 100644
index 00000000000..c224ab04047
--- /dev/null
+++ b/feature-group-definitions/linear-easing.dist.yml
@@ -0,0 +1,19 @@
+# Generated from: linear-easing.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: linear() easing
+description: The `linear()` easing function for animations and transitions interpolates linearly between the control points, and can be used to approximate complex easing functions, such as a bounce effect.
+spec: https://drafts.csswg.org/css-easing-2/#the-linear-easing-function
+status:
+  baseline: low
+  baseline_low_date: 2023-12-11
+  support:
+    chrome: "113"
+    chrome_android: "113"
+    edge: "113"
+    firefox: "112"
+    firefox_android: "112"
+    safari: "17.2"
+    safari_ios: "17.2"
+compat_features:
+  - css.types.easing-function.linear-function
diff --git a/feature-group-definitions/mathml.dist.yml b/feature-group-definitions/mathml.dist.yml
new file mode 100644
index 00000000000..477c2b8361c
--- /dev/null
+++ b/feature-group-definitions/mathml.dist.yml
@@ -0,0 +1,81 @@
+# Generated from: mathml.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: MathML
+description: MathML, or the Mathematical Markup Language, describes mathematical notation, such as expressions and formulas. Also known as MathML Core.
+spec: https://w3c.github.io/mathml-core/
+caniuse: mathml
+status:
+  baseline: false
+  support:
+    chrome: "117"
+    chrome_android: "117"
+    edge: "117"
+    firefox: "110"
+    firefox_android: "110"
+compat_features:
+  - api.MathMLElement
+  - api.MathMLElement.autofocus
+  - api.MathMLElement.blur
+  - api.MathMLElement.dataset
+  - api.MathMLElement.focus
+  - api.MathMLElement.style
+  - api.MathMLElement.tabIndex
+  - mathml.elements.math
+  - mathml.elements.math.display
+  - mathml.elements.merror
+  - mathml.elements.mfrac
+  - mathml.elements.mfrac.linethickness
+  - mathml.elements.mi
+  - mathml.elements.mi.mathvariant
+  - mathml.elements.mmultiscripts
+  - mathml.elements.mn
+  - mathml.elements.mo
+  - mathml.elements.mo.form
+  - mathml.elements.mo.largeop
+  - mathml.elements.mo.lspace
+  - mathml.elements.mo.maxsize
+  - mathml.elements.mo.minsize
+  - mathml.elements.mo.moveablelimits
+  - mathml.elements.mo.rspace
+  - mathml.elements.mo.stretchy
+  - mathml.elements.mo.symmetric
+  - mathml.elements.mover
+  - mathml.elements.mover.accent
+  - mathml.elements.mpadded
+  - mathml.elements.mpadded.depth
+  - mathml.elements.mpadded.height
+  - mathml.elements.mpadded.lspace
+  - mathml.elements.mpadded.voffset
+  - mathml.elements.mpadded.width
+  - mathml.elements.mphantom
+  - mathml.elements.mroot
+  - mathml.elements.mrow
+  - mathml.elements.ms
+  - mathml.elements.mspace
+  - mathml.elements.mspace.depth
+  - mathml.elements.mspace.height
+  - mathml.elements.mspace.width
+  - mathml.elements.msqrt
+  - mathml.elements.mstyle
+  - mathml.elements.msub
+  - mathml.elements.msubsup
+  - mathml.elements.msup
+  - mathml.elements.mtable
+  - mathml.elements.mtd
+  - mathml.elements.mtd.columnspan
+  - mathml.elements.mtd.rowspan
+  - mathml.elements.mtext
+  - mathml.elements.mtr
+  - mathml.elements.munder
+  - mathml.elements.munder.accentunder
+  - mathml.elements.munderover
+  - mathml.elements.munderover.accent
+  - mathml.elements.munderover.accentunder
+  - mathml.elements.semantics
+  - mathml.global_attributes.dir
+  - mathml.global_attributes.displaystyle
+  - mathml.global_attributes.mathbackground
+  - mathml.global_attributes.mathcolor
+  - mathml.global_attributes.mathsize
+  - mathml.global_attributes.scriptlevel # TODO: when setting Baseline status, we'll probably want to ignore this. It's the one piece not interopable and has an odd story.
diff --git a/feature-group-definitions/min-max-clamp.dist.yml b/feature-group-definitions/min-max-clamp.dist.yml
new file mode 100644
index 00000000000..0f05b217528
--- /dev/null
+++ b/feature-group-definitions/min-max-clamp.dist.yml
@@ -0,0 +1,22 @@
+# Generated from: min-max-clamp.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: min(), max(), and clamp()
+description: The `min()` and `max()` CSS functions return the minimum or maximum of the arguments, while `clamp()` clamps a value to a given range.
+spec: https://drafts.csswg.org/css-values-4/#comp-func
+status:
+  baseline: high
+  baseline_low_date: 2020-07-28
+  baseline_high_date: 2023-01-28
+  support:
+    chrome: "79"
+    chrome_android: "79"
+    edge: "79"
+    firefox: "75"
+    firefox_android: "79"
+    safari: "13.1"
+    safari_ios: "13.4"
+compat_features:
+  - css.types.min
+  - css.types.max
+  - css.types.clamp
diff --git a/feature-group-definitions/picture-in-picture.dist.yml b/feature-group-definitions/picture-in-picture.dist.yml
new file mode 100644
index 00000000000..0c3718317f3
--- /dev/null
+++ b/feature-group-definitions/picture-in-picture.dist.yml
@@ -0,0 +1,29 @@
+# Generated from: picture-in-picture.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: Picture-in-picture
+spec: https://w3c.github.io/picture-in-picture/
+caniuse: picture-in-picture
+usage_stats: https://chromestatus.com/metrics/feature/timeline/popularity/2444
+status:
+  baseline: false
+  support:
+    chrome: "110"
+compat_features:
+  - api.Document.exitPictureInPicture
+  - api.Document.pictureInPictureElement
+  - api.Document.pictureInPictureEnabled
+  - api.HTMLVideoElement.disablePictureInPicture
+  - api.HTMLVideoElement.enterpictureinpicture_event
+  - api.HTMLVideoElement.leavepictureinpicture_event
+  - api.HTMLVideoElement.requestPictureInPicture
+  - api.PictureInPictureEvent
+  - api.PictureInPictureEvent.PictureInPictureEvent
+  - api.PictureInPictureEvent.pictureInPictureWindow
+  - api.PictureInPictureWindow
+  - api.PictureInPictureWindow.height
+  - api.PictureInPictureWindow.resize_event
+  - api.PictureInPictureWindow.width
+  - api.ShadowRoot.pictureInPictureElement
+  - css.selectors.picture-in-picture
+  - http.headers.Permissions-Policy.picture-in-picture
diff --git a/feature-group-definitions/pointer-lock.dist.yml b/feature-group-definitions/pointer-lock.dist.yml
new file mode 100644
index 00000000000..d5d33e90ac7
--- /dev/null
+++ b/feature-group-definitions/pointer-lock.dist.yml
@@ -0,0 +1,27 @@
+# Generated from: pointer-lock.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: Pointer lock
+description: Provides access to raw mouse movement by locking the target of mouse events to a single element and hiding the mouse cursor.
+spec: https://w3c.github.io/pointerlock/
+caniuse: pointerlock
+usage_stats: https://chromestatus.com/metrics/feature/timeline/popularity/417
+status:
+  baseline: false
+  support:
+    chrome: "53"
+    chrome_android: "53"
+    edge: "79"
+    firefox: "63"
+    firefox_android: "63"
+    safari: "10.1"
+compat_features:
+  - api.Document.exitPointerLock
+  - api.Document.pointerlockchange_event
+  - api.Document.pointerLockElement
+  - api.Document.pointerlockerror_event
+  - api.Element.requestPointerLock
+  - api.MouseEvent.movementX
+  - api.MouseEvent.movementY
+  - api.ShadowRoot.pointerLockElement
+  - html.elements.iframe.sandbox.allow-pointer-lock
diff --git a/feature-group-definitions/prefers-color-scheme.dist.yml b/feature-group-definitions/prefers-color-scheme.dist.yml
new file mode 100644
index 00000000000..cbd03feb315
--- /dev/null
+++ b/feature-group-definitions/prefers-color-scheme.dist.yml
@@ -0,0 +1,20 @@
+# Generated from: prefers-color-scheme.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: prefers-color-scheme
+description: The `prefers-color-scheme` CSS media query detects the requested color scheme, light or dark.
+spec: https://drafts.csswg.org/mediaqueries-5/#prefers-color-scheme
+status:
+  baseline: high
+  baseline_low_date: 2020-01-15
+  baseline_high_date: 2022-07-15
+  support:
+    chrome: "76"
+    chrome_android: "76"
+    edge: "79"
+    firefox: "67"
+    firefox_android: "67"
+    safari: "12.1"
+    safari_ios: "13"
+compat_features:
+  - css.at-rules.media.prefers-color-scheme
diff --git a/feature-group-definitions/round-mod-rem.dist.yml b/feature-group-definitions/round-mod-rem.dist.yml
new file mode 100644
index 00000000000..d2f79c7c3d0
--- /dev/null
+++ b/feature-group-definitions/round-mod-rem.dist.yml
@@ -0,0 +1,17 @@
+# Generated from: round-mod-rem.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: round(), mod(), and rem()
+description: The `round()`, `mod()`, and `rem()` CSS functions compute rounded values and the remainder after division.
+spec: https://drafts.csswg.org/css-values-4/#round-func
+status:
+  baseline: false
+  support:
+    firefox: "118"
+    firefox_android: "118"
+    safari: "15.4"
+    safari_ios: "15.4"
+compat_features:
+  - css.types.round
+  - css.types.mod
+  - css.types.rem
diff --git a/feature-group-definitions/scroll-snap.dist.yml b/feature-group-definitions/scroll-snap.dist.yml
new file mode 100644
index 00000000000..c35cc36f935
--- /dev/null
+++ b/feature-group-definitions/scroll-snap.dist.yml
@@ -0,0 +1,44 @@
+# Generated from: scroll-snap.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: Scroll snap
+spec: https://drafts.csswg.org/css-scroll-snap-1/
+caniuse: css-snappoints
+usage_stats: https://chromestatus.com/metrics/css/timeline/popularity/499
+status:
+  baseline: low
+  baseline_low_date: 2022-07-26
+  support:
+    chrome: "75"
+    chrome_android: "75"
+    edge: "79"
+    firefox: "103"
+    firefox_android: "103"
+    safari: "15"
+    safari_ios: "15"
+compat_features:
+  - css.properties.scroll-margin-block-end
+  - css.properties.scroll-margin-block-start
+  - css.properties.scroll-margin-block
+  - css.properties.scroll-margin-bottom
+  - css.properties.scroll-margin-inline-end
+  - css.properties.scroll-margin-inline-start
+  - css.properties.scroll-margin-inline
+  - css.properties.scroll-margin-left
+  - css.properties.scroll-margin-right
+  - css.properties.scroll-margin-top
+  - css.properties.scroll-margin
+  - css.properties.scroll-padding-block-end
+  - css.properties.scroll-padding-block-start
+  - css.properties.scroll-padding-block
+  - css.properties.scroll-padding-bottom
+  - css.properties.scroll-padding-inline-end
+  - css.properties.scroll-padding-inline-start
+  - css.properties.scroll-padding-inline
+  - css.properties.scroll-padding-left
+  - css.properties.scroll-padding-right
+  - css.properties.scroll-padding-top
+  - css.properties.scroll-padding
+  - css.properties.scroll-snap-align
+  - css.properties.scroll-snap-stop
+  - css.properties.scroll-snap-type
diff --git a/feature-group-definitions/scrollbar-color.dist.yml b/feature-group-definitions/scrollbar-color.dist.yml
new file mode 100644
index 00000000000..41f03c95776
--- /dev/null
+++ b/feature-group-definitions/scrollbar-color.dist.yml
@@ -0,0 +1,16 @@
+# Generated from: scrollbar-color.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: scrollbar-color
+spec: https://drafts.csswg.org/css-scrollbars-1/#scrollbar-color
+usage_stats: https://chromestatus.com/metrics/css/timeline/popularity/763
+status:
+  baseline: false
+  support:
+    chrome: "121"
+    chrome_android: "121"
+    edge: "121"
+    firefox: "64"
+    firefox_android: "64"
+compat_features:
+  - css.properties.scrollbar-color
diff --git a/feature-group-definitions/scrollbar-gutter.dist.yml b/feature-group-definitions/scrollbar-gutter.dist.yml
new file mode 100644
index 00000000000..83c5f08148c
--- /dev/null
+++ b/feature-group-definitions/scrollbar-gutter.dist.yml
@@ -0,0 +1,16 @@
+# Generated from: scrollbar-gutter.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: scrollbar-gutter
+spec: https://drafts.csswg.org/css-overflow-3/#scrollbar-gutter-property
+usage_stats: https://chromestatus.com/metrics/css/timeline/popularity/671
+status:
+  baseline: false
+  support:
+    chrome: "94"
+    chrome_android: "94"
+    edge: "94"
+    firefox: "97"
+    firefox_android: "97"
+compat_features:
+  - css.properties.scrollbar-gutter
diff --git a/feature-group-definitions/scrollbar-width.dist.yml b/feature-group-definitions/scrollbar-width.dist.yml
new file mode 100644
index 00000000000..364c457e268
--- /dev/null
+++ b/feature-group-definitions/scrollbar-width.dist.yml
@@ -0,0 +1,16 @@
+# Generated from: scrollbar-width.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: scrollbar-width
+spec: https://drafts.csswg.org/css-scrollbars-1/#scrollbar-width
+usage_stats: https://chromestatus.com/metrics/css/timeline/popularity/680
+status:
+  baseline: false
+  support:
+    chrome: "121"
+    chrome_android: "121"
+    edge: "121"
+    firefox: "64"
+    firefox_android: "64"
+compat_features:
+  - css.properties.scrollbar-width
diff --git a/feature-group-definitions/search-input-type.dist.yml b/feature-group-definitions/search-input-type.dist.yml
new file mode 100644
index 00000000000..3d266fc7257
--- /dev/null
+++ b/feature-group-definitions/search-input-type.dist.yml
@@ -0,0 +1,20 @@
+# Generated from: search-input-type.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: '<input type="search">'
+spec: https://html.spec.whatwg.org/multipage/input.html#text-(type=text)-state-and-search-state-(type=search)
+caniuse: input-search
+status:
+  baseline: high
+  baseline_low_date: 2015-07-29
+  baseline_high_date: 2018-01-29
+  support:
+    chrome: "5"
+    chrome_android: "18"
+    edge: "12"
+    firefox: "4"
+    firefox_android: "4"
+    safari: "5"
+    safari_ios: "4.2"
+compat_features:
+  - html.elements.input.type_search
diff --git a/feature-group-definitions/search.dist.yml b/feature-group-definitions/search.dist.yml
new file mode 100644
index 00000000000..b1cea0f5bc6
--- /dev/null
+++ b/feature-group-definitions/search.dist.yml
@@ -0,0 +1,18 @@
+# Generated from: search.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: <search>
+spec: https://html.spec.whatwg.org/multipage/grouping-content.html#the-search-element
+status:
+  baseline: low
+  baseline_low_date: 2023-10-13
+  support:
+    chrome: "118"
+    chrome_android: "118"
+    edge: "118"
+    firefox: "118"
+    firefox_android: "118"
+    safari: "17"
+    safari_ios: "17"
+compat_features:
+  - html.elements.search
diff --git a/feature-group-definitions/show-picker-input.dist.yml b/feature-group-definitions/show-picker-input.dist.yml
new file mode 100644
index 00000000000..041c70566cb
--- /dev/null
+++ b/feature-group-definitions/show-picker-input.dist.yml
@@ -0,0 +1,24 @@
+# Generated from: show-picker-input.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: showPicker() for <input>
+description: The `showPicker()` method for `<input>` elements shows the user interface for picking a value. For example, for `<input type="date">` it shows the interface for picking a date.
+spec: https://html.spec.whatwg.org/multipage/input.html#dom-input-showpicker
+usage_stats: https://chromestatus.com/metrics/feature/timeline/popularity/4097
+status:
+  baseline: false
+  support:
+    chrome: "99"
+    chrome_android: "99"
+    edge: "99"
+compat_features:
+  - api.HTMLInputElement.showPicker
+  - api.HTMLInputElement.showPicker.autocomplete_input
+  - api.HTMLInputElement.showPicker.color_input
+  - api.HTMLInputElement.showPicker.datalist_input
+  - api.HTMLInputElement.showPicker.date_input
+  - api.HTMLInputElement.showPicker.datetime_local_input
+  - api.HTMLInputElement.showPicker.file_input
+  - api.HTMLInputElement.showPicker.month_input
+  - api.HTMLInputElement.showPicker.time_input
+  - api.HTMLInputElement.showPicker.week_input
diff --git a/feature-group-definitions/show-picker-select.dist.yml b/feature-group-definitions/show-picker-select.dist.yml
new file mode 100644
index 00000000000..1feb0aa819c
--- /dev/null
+++ b/feature-group-definitions/show-picker-select.dist.yml
@@ -0,0 +1,16 @@
+# Generated from: show-picker-select.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: showPicker() for <select>
+description: The `showPicker()` method for `<select>` elements shows the dropdown menu or other user interface for picking one of the options.
+spec: https://html.spec.whatwg.org/multipage/input.html#dom-select-showpicker
+status:
+  baseline: false
+  support:
+    chrome: "121"
+    chrome_android: "121"
+    edge: "121"
+    firefox: "122"
+    firefox_android: "122"
+compat_features:
+  - api.HTMLSelectElement.showPicker
diff --git a/feature-group-definitions/slot.dist.yml b/feature-group-definitions/slot.dist.yml
new file mode 100644
index 00000000000..492f0585981
--- /dev/null
+++ b/feature-group-definitions/slot.dist.yml
@@ -0,0 +1,32 @@
+# Generated from: slot.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: <slot>
+spec: https://html.spec.whatwg.org/multipage/scripting.html#the-slot-element
+usage_stats: https://chromestatus.com/metrics/feature/timeline/popularity/1898
+status:
+  baseline: low
+  baseline_low_date: 2023-03-27
+  support:
+    chrome: "86"
+    chrome_android: "86"
+    edge: "86"
+    firefox: "92"
+    firefox_android: "92"
+    safari: "16.4"
+    safari_ios: "16.4"
+compat_features:
+  - api.Element.assignedSlot
+  - api.Element.slot
+  - api.HTMLSlotElement
+  - api.HTMLSlotElement.assign
+  - api.HTMLSlotElement.assignedElements
+  - api.HTMLSlotElement.assignedNodes
+  - api.HTMLSlotElement.name
+  - api.HTMLSlotElement.slotchange_event
+  - api.ShadowRoot.slotAssignment
+  - api.Text.assignedSlot
+  - css.selectors.slotted
+  - html.elements.slot
+  - html.elements.slot.name
+  - html.global_attributes.slot
diff --git a/feature-group-definitions/starting-style.dist.yml b/feature-group-definitions/starting-style.dist.yml
new file mode 100644
index 00000000000..5ce119bc066
--- /dev/null
+++ b/feature-group-definitions/starting-style.dist.yml
@@ -0,0 +1,14 @@
+# Generated from: starting-style.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: "@starting-style"
+spec: https://drafts.csswg.org/css-transitions-2/#defining-before-change-style
+status:
+  baseline: false
+  support:
+    chrome: "117"
+    chrome_android: "117"
+    edge: "117"
+compat_features:
+  - api.CSSStartingStyleRule
+  - css.at-rules.starting-style
diff --git a/feature-group-definitions/template.dist.yml b/feature-group-definitions/template.dist.yml
new file mode 100644
index 00000000000..862cfd9eebf
--- /dev/null
+++ b/feature-group-definitions/template.dist.yml
@@ -0,0 +1,22 @@
+# Generated from: template.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: <template>
+spec: https://html.spec.whatwg.org/multipage/scripting.html#the-template-element
+usage_stats: https://chromestatus.com/metrics/feature/timeline/popularity/2769
+status:
+  baseline: high
+  baseline_low_date: 2015-11-12
+  baseline_high_date: 2018-05-12
+  support:
+    chrome: "26"
+    chrome_android: "26"
+    edge: "13"
+    firefox: "22"
+    firefox_android: "22"
+    safari: "8"
+    safari_ios: "8"
+compat_features:
+  - api.HTMLTemplateElement
+  - api.HTMLTemplateElement.content
+  - html.elements.template
diff --git a/feature-group-definitions/text-fragments.dist.yml b/feature-group-definitions/text-fragments.dist.yml
new file mode 100644
index 00000000000..d9fed89baca
--- /dev/null
+++ b/feature-group-definitions/text-fragments.dist.yml
@@ -0,0 +1,18 @@
+# Generated from: text-fragments.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: Text fragments
+description: Text fragments link to a snippet of text within a page. The browser may scroll, highlight, or otherwise bring that text to the reader's attention. The text is specified in a URL fragment on the form `#:~:text=snippet` and can be styled using the `::target-text` pseudo-element.
+spec: https://wicg.github.io/scroll-to-text-fragment/
+usage_stats: https://chromestatus.com/metrics/feature/timeline/popularity/2901
+caniuse: url-scroll-to-text-fragment
+status:
+  baseline: false
+  support:
+    chrome: "89"
+    chrome_android: "89"
+    edge: "89"
+compat_features:
+  - api.Document.fragmentDirective
+  - api.FragmentDirective
+  - css.selectors.target-text
diff --git a/feature-group-definitions/text-spacing-trim.dist.yml b/feature-group-definitions/text-spacing-trim.dist.yml
new file mode 100644
index 00000000000..a966a0342d3
--- /dev/null
+++ b/feature-group-definitions/text-spacing-trim.dist.yml
@@ -0,0 +1,14 @@
+# Generated from: text-spacing-trim.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: text-spacing-trim
+description: The `text-spacing-trim` CSS property controls spacing around CJK characters, avoiding excessive whitespace when using full-width punctuation characters.
+spec: https://drafts.csswg.org/css-text-4/#text-spacing-trim-property
+usage_stats: https://chromestatus.com/metrics/css/timeline/popularity/771
+status:
+  baseline: false
+  support:
+    chrome: "123"
+    chrome_android: "123"
+compat_features:
+  - css.properties.text-spacing-trim
diff --git a/feature-group-definitions/text-wrap-balance.dist.yml b/feature-group-definitions/text-wrap-balance.dist.yml
new file mode 100644
index 00000000000..ce47734d409
--- /dev/null
+++ b/feature-group-definitions/text-wrap-balance.dist.yml
@@ -0,0 +1,17 @@
+# Generated from: text-wrap-balance.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: "text-wrap: balance"
+spec: https://drafts.csswg.org/css-text-4/#valdef-text-wrap-style-balance
+usage_stats: https://chromestatus.com/metrics/feature/timeline/popularity/4673
+status:
+  baseline: false
+  support:
+    chrome: "114"
+    chrome_android: "114"
+    edge: "114"
+    firefox: "121"
+    firefox_android: "121"
+    safari: preview
+compat_features:
+  - css.properties.text-wrap.balance
diff --git a/feature-group-definitions/text-wrap-pretty.dist.yml b/feature-group-definitions/text-wrap-pretty.dist.yml
new file mode 100644
index 00000000000..61dc1e2f94a
--- /dev/null
+++ b/feature-group-definitions/text-wrap-pretty.dist.yml
@@ -0,0 +1,14 @@
+# Generated from: text-wrap-pretty.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: "text-wrap: pretty"
+spec: https://drafts.csswg.org/css-text-4/#valdef-text-wrap-style-pretty
+usage_stats: https://chromestatus.com/metrics/feature/timeline/popularity/4674
+status:
+  baseline: false
+  support:
+    chrome: "117"
+    chrome_android: "117"
+    edge: "117"
+compat_features:
+  - css.properties.text-wrap.pretty
diff --git a/feature-group-definitions/transforms2d.dist.yml b/feature-group-definitions/transforms2d.dist.yml
new file mode 100644
index 00000000000..a9577b4cd1f
--- /dev/null
+++ b/feature-group-definitions/transforms2d.dist.yml
@@ -0,0 +1,35 @@
+# Generated from: transforms2d.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: 2D transforms
+description: The `transform` CSS property and its 2D transform functions allow rotating, scaling, skewing, and translating an element. Arbitrary 2D transforms are also possible using a transformation matrix.
+caniuse: transforms2d
+spec: https://drafts.csswg.org/css-transforms-1/
+status:
+  baseline: high
+  baseline_low_date: 2020-01-15
+  baseline_high_date: 2022-07-15
+  support:
+    chrome: "64"
+    chrome_android: "64"
+    edge: "79"
+    firefox: "55"
+    firefox_android: "55"
+    safari: "11"
+    safari_ios: "11"
+compat_features:
+  - css.properties.transform
+  - css.properties.transform-box
+  - css.properties.transform-origin
+  - css.types.transform-function
+  - css.types.transform-function.matrix
+  - css.types.transform-function.rotate
+  - css.types.transform-function.scale
+  - css.types.transform-function.scaleX
+  - css.types.transform-function.scaleY
+  - css.types.transform-function.skew
+  - css.types.transform-function.skewX
+  - css.types.transform-function.skewY
+  - css.types.transform-function.translate
+  - css.types.transform-function.translateX
+  - css.types.transform-function.translateY
diff --git a/feature-group-definitions/transforms3d.dist.yml b/feature-group-definitions/transforms3d.dist.yml
new file mode 100644
index 00000000000..6741eec37b9
--- /dev/null
+++ b/feature-group-definitions/transforms3d.dist.yml
@@ -0,0 +1,41 @@
+# Generated from: transforms3d.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: 3D transforms
+description: The `transform` CSS property and its 3D transform functions allow rotations and other transforms in three dimensions, including perspective transforms.
+caniuse: transforms3d
+spec: https://drafts.csswg.org/css-transforms-2/
+status:
+  baseline: low
+  baseline_low_date: 2022-03-14
+  support:
+    chrome: "83"
+    chrome_android: "83"
+    edge: "12"
+    firefox: "72"
+    firefox_android: "79"
+    safari: "15.4"
+    safari_ios: "15.4"
+compat_features:
+  - css.properties.backface-visibility
+  - css.properties.perspective-origin
+  - css.properties.perspective-origin.bottom
+  - css.properties.perspective-origin.center
+  - css.properties.perspective-origin.left
+  - css.properties.perspective-origin.right
+  - css.properties.perspective-origin.top
+  - css.properties.perspective
+  - css.properties.perspective.none
+  - css.properties.transform-style
+  - css.properties.transform.3d
+  # https://drafts.csswg.org/css-transforms-2/#three-d-transform-functions
+  - css.types.transform-function.matrix3d
+  - css.types.transform-function.translate3d
+  - css.types.transform-function.translateZ
+  - css.types.transform-function.scale3d
+  - css.types.transform-function.scaleZ
+  - css.types.transform-function.rotate3d
+  - css.types.transform-function.rotateX
+  - css.types.transform-function.rotateY
+  - css.types.transform-function.rotateZ
+  - css.types.transform-function.perspective
diff --git a/feature-group-definitions/transition-behavior.dist.yml b/feature-group-definitions/transition-behavior.dist.yml
new file mode 100644
index 00000000000..422fb5c1b80
--- /dev/null
+++ b/feature-group-definitions/transition-behavior.dist.yml
@@ -0,0 +1,16 @@
+# Generated from: transition-behavior.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: transition-behavior
+spec: https://drafts.csswg.org/css-transitions-2/#transition-behavior-property
+usage_stats: https://chromestatus.com/metrics/css/timeline/popularity/766
+status:
+  baseline: false
+  support:
+    chrome: "117"
+    chrome_android: "117"
+    edge: "117"
+    safari: "17.4"
+    safari_ios: "17.4"
+compat_features:
+  - css.properties.transition-behavior
diff --git a/feature-group-definitions/trig-functions.dist.yml b/feature-group-definitions/trig-functions.dist.yml
new file mode 100644
index 00000000000..39a0b348f2b
--- /dev/null
+++ b/feature-group-definitions/trig-functions.dist.yml
@@ -0,0 +1,25 @@
+# Generated from: trig-functions.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: sin(), cos(), tan(), asin(), acos(), atan(), and atan2()
+description: The `sin()`, `cos()`, `tan()`, `asin()`, `acos()`, `atan()`, and `atan2()` CSS functions compute various trigonometric functions.
+spec: https://drafts.csswg.org/css-values-4/#trig-funcs
+status:
+  baseline: low
+  baseline_low_date: 2023-03-13
+  support:
+    chrome: "111"
+    chrome_android: "111"
+    edge: "111"
+    firefox: "108"
+    firefox_android: "108"
+    safari: "15.4"
+    safari_ios: "15.4"
+compat_features:
+  - css.types.sin
+  - css.types.cos
+  - css.types.tan
+  - css.types.asin
+  - css.types.acos
+  - css.types.atan
+  - css.types.atan2
diff --git a/feature-group-definitions/user-pseudos.dist.yml b/feature-group-definitions/user-pseudos.dist.yml
new file mode 100644
index 00000000000..9fab862f183
--- /dev/null
+++ b/feature-group-definitions/user-pseudos.dist.yml
@@ -0,0 +1,19 @@
+# Generated from: user-pseudos.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: ":user-valid and :user-invalid"
+spec: https://drafts.csswg.org/selectors-4/#user-pseudos
+status:
+  baseline: low
+  baseline_low_date: 2023-11-02
+  support:
+    chrome: "119"
+    chrome_android: "119"
+    edge: "119"
+    firefox: "88"
+    firefox_android: "88"
+    safari: "16.5"
+    safari_ios: "16.5"
+compat_features:
+  - css.selectors.user-invalid
+  - css.selectors.user-valid
diff --git a/feature-group-definitions/visual-viewport.dist.yml b/feature-group-definitions/visual-viewport.dist.yml
new file mode 100644
index 00000000000..db44e456472
--- /dev/null
+++ b/feature-group-definitions/visual-viewport.dist.yml
@@ -0,0 +1,29 @@
+# Generated from: visual-viewport.yml
+# Do not edit this file by hand. Edit the source file instead!
+
+name: Visual viewport API
+spec: https://drafts.csswg.org/cssom-view-1/#visualViewport
+status:
+  baseline: high
+  baseline_low_date: 2021-08-10
+  baseline_high_date: 2024-02-10
+  support:
+    chrome: "62"
+    chrome_android: "62"
+    edge: "79"
+    firefox: "91"
+    firefox_android: "68"
+    safari: "13"
+    safari_ios: "13"
+compat_features:
+  - api.VisualViewport
+  - api.VisualViewport.height
+  - api.VisualViewport.offsetLeft
+  - api.VisualViewport.offsetTop
+  - api.VisualViewport.pageLeft
+  - api.VisualViewport.pageTop
+  - api.VisualViewport.resize_event
+  - api.VisualViewport.scale
+  - api.VisualViewport.scroll_event
+  - api.VisualViewport.width
+  - api.Window.visualViewport

From fc118a856982921a820c479104dc94edf396d82d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Philip=20J=C3=A4genstedt?= <philip@foolip.org>
Date: Sat, 6 Apr 2024 12:17:03 +0200
Subject: [PATCH 2/4] Back out complicated A-C

---
 .../background-gradients.dist.yml             | 63 -------------------
 .../calc-constants.dist.yml                   | 19 ------
 feature-group-definitions/calc.dist.yml       | 24 -------
 .../check-visibility.dist.yml                 | 18 ------
 .../color-scheme.dist.yml                     | 22 -------
 .../compression-streams.dist.yml              | 34 ----------
 .../constructed-stylesheets.dist.yml          | 22 -------
 .../contain-intrinsic-size.dist.yml           | 25 --------
 8 files changed, 227 deletions(-)
 delete mode 100644 feature-group-definitions/background-gradients.dist.yml
 delete mode 100644 feature-group-definitions/calc-constants.dist.yml
 delete mode 100644 feature-group-definitions/calc.dist.yml
 delete mode 100644 feature-group-definitions/check-visibility.dist.yml
 delete mode 100644 feature-group-definitions/color-scheme.dist.yml
 delete mode 100644 feature-group-definitions/compression-streams.dist.yml
 delete mode 100644 feature-group-definitions/constructed-stylesheets.dist.yml
 delete mode 100644 feature-group-definitions/contain-intrinsic-size.dist.yml

diff --git a/feature-group-definitions/background-gradients.dist.yml b/feature-group-definitions/background-gradients.dist.yml
deleted file mode 100644
index 34227f64739..00000000000
--- a/feature-group-definitions/background-gradients.dist.yml
+++ /dev/null
@@ -1,63 +0,0 @@
-# Generated from: background-gradients.yml
-# Do not edit this file by hand. Edit the source file instead!
-
-name: Background gradients
-description: The `linear-gradient()`, `radial-gradient()`, and `conic-gradient()` CSS functions create backgrounds that progress between two or more colors.
-spec: https://drafts.csswg.org/css-images-4/#gradients
-caniuse:
-  - css-gradients
-  - css-repeating-gradients
-  - css-conic-gradients
-status:
-  baseline: high
-  baseline_low_date: 2020-11-17
-  baseline_high_date: 2023-05-17
-  support:
-    chrome: "72"
-    chrome_android: "72"
-    edge: "79"
-    firefox: "83"
-    firefox_android: "83"
-    safari: "12.1"
-    safari_ios: "12.2"
-compat_features:
-  - css.properties.background-image.gradients
-  # Linear gradients
-  - css.types.image.gradient.linear-gradient
-  - css.types.image.gradient.linear-gradient.doubleposition
-  # - css.types.image.gradient.linear-gradient.hue_interpolation_method
-  # - css.types.image.gradient.linear-gradient.interpolation_color_space
-  - css.types.image.gradient.linear-gradient.interpolation_hints
-  - css.types.image.gradient.linear-gradient.to
-  - css.types.image.gradient.linear-gradient.unitless_0_angle
-  # Radial gradients
-  - css.types.image.gradient.radial-gradient
-  - css.types.image.gradient.radial-gradient.at
-  - css.types.image.gradient.radial-gradient.doubleposition
-  # - css.types.image.gradient.radial-gradient.hue_interpolation_method
-  # - css.types.image.gradient.radial-gradient.interpolation_color_space
-  - css.types.image.gradient.radial-gradient.interpolation_hints
-  # Conic gradients
-  - css.types.image.gradient.conic-gradient
-  - css.types.image.gradient.conic-gradient.doubleposition
-  # - css.types.image.gradient.conic-gradient.hue_interpolation_method
-  # - css.types.image.gradient.conic-gradient.interpolation_color_space
-  # Repeating linear gradients
-  - css.types.image.gradient.repeating-linear-gradient
-  - css.types.image.gradient.repeating-linear-gradient.doubleposition
-  # - css.types.image.gradient.repeating-linear-gradient.hue_interpolation_method
-  # - css.types.image.gradient.repeating-linear-gradient.interpolation_color_space
-  - css.types.image.gradient.repeating-linear-gradient.interpolation_hints
-  - css.types.image.gradient.repeating-linear-gradient.to
-  - css.types.image.gradient.repeating-linear-gradient.unitless_0_angle
-  # Repeating radial gradients
-  - css.types.image.gradient.repeating-radial-gradient
-  - css.types.image.gradient.repeating-radial-gradient.at
-  - css.types.image.gradient.repeating-radial-gradient.doubleposition
-  # - css.types.image.gradient.repeating-radial-gradient.hue_interpolation_method
-  # - css.types.image.gradient.repeating-radial-gradient.interpolation_color_space
-  - css.types.image.gradient.repeating-radial-gradient.interpolation_hints
-  # Repeating conic gradients
-  - css.types.image.gradient.repeating-conic-gradient
-  # - css.types.image.gradient.repeating-conic-gradient.hue_interpolation_method
-  # - css.types.image.gradient.repeating-conic-gradient.interpolation_color_space
diff --git a/feature-group-definitions/calc-constants.dist.yml b/feature-group-definitions/calc-constants.dist.yml
deleted file mode 100644
index 383350b7c29..00000000000
--- a/feature-group-definitions/calc-constants.dist.yml
+++ /dev/null
@@ -1,19 +0,0 @@
-# Generated from: calc-constants.yml
-# Do not edit this file by hand. Edit the source file instead!
-
-name: calc() constants
-description: The `e`, `pi`, `infinity`, and `NaN` constants are accepted in CSS math functions such as `calc()`.
-spec: https://drafts.csswg.org/css-values-4/#calc-keywords
-status:
-  baseline: false
-  support:
-    firefox: "114"
-    firefox_android: "114"
-    safari: "16"
-    safari_ios: "16"
-compat_features:
-  - css.types.calc-constant
-  - css.types.calc-constant.NaN
-  - css.types.calc-constant.e
-  - css.types.calc-constant.infinity
-  - css.types.calc-constant.pi
diff --git a/feature-group-definitions/calc.dist.yml b/feature-group-definitions/calc.dist.yml
deleted file mode 100644
index 63e283ae515..00000000000
--- a/feature-group-definitions/calc.dist.yml
+++ /dev/null
@@ -1,24 +0,0 @@
-# Generated from: calc.yml
-# Do not edit this file by hand. Edit the source file instead!
-
-name: calc()
-description: The `calc()` CSS function computes mathematical expressions such a `calc(100%/3 - 1em)`.
-spec: https://drafts.csswg.org/css-values-3/#calc-notation
-caniuse: calc
-status:
-  baseline: high
-  baseline_low_date: 2017-10-17
-  baseline_high_date: 2020-04-17
-  support:
-    chrome: "51"
-    chrome_android: "51"
-    edge: "16"
-    firefox: "48"
-    firefox_android: "48"
-    safari: "11"
-    safari_ios: "11"
-compat_features:
-  - css.types.calc
-  - css.types.calc.gradient_color_stops
-  - css.types.calc.nested
-  - css.types.calc.number_values
diff --git a/feature-group-definitions/check-visibility.dist.yml b/feature-group-definitions/check-visibility.dist.yml
deleted file mode 100644
index 3b75f051fba..00000000000
--- a/feature-group-definitions/check-visibility.dist.yml
+++ /dev/null
@@ -1,18 +0,0 @@
-# Generated from: check-visibility.yml
-# Do not edit this file by hand. Edit the source file instead!
-
-name: checkVisibility()
-spec: https://drafts.csswg.org/cssom-view-1/#dom-element-checkvisibility
-status:
-  baseline: false
-  support:
-    chrome: "105"
-    chrome_android: "105"
-    edge: "105"
-    firefox: "106"
-    firefox_android: "106"
-    safari: preview
-compat_features:
-  - api.Element.checkVisibility
-  - api.Element.checkVisibility.options_checkOpacity_parameter
-  - api.Element.checkVisibility.options_checkVisibilityCSS_parameter
diff --git a/feature-group-definitions/color-scheme.dist.yml b/feature-group-definitions/color-scheme.dist.yml
deleted file mode 100644
index 848adb42937..00000000000
--- a/feature-group-definitions/color-scheme.dist.yml
+++ /dev/null
@@ -1,22 +0,0 @@
-# Generated from: color-scheme.yml
-# Do not edit this file by hand. Edit the source file instead!
-
-name: color-scheme
-description: The `color-scheme` CSS property sets which color schemes (light or dark) an element uses and may prevent automatic dark mode adjustments by the browser.
-spec: https://drafts.csswg.org/css-color-adjust-1/#color-scheme-prop
-usage_stats: https://chromestatus.com/metrics/css/timeline/popularity/637
-status:
-  baseline: low
-  baseline_low_date: 2022-02-03
-  support:
-    chrome: "98"
-    chrome_android: "98"
-    edge: "98"
-    firefox: "96"
-    firefox_android: "96"
-    safari: "13"
-    safari_ios: "13"
-compat_features:
-  - css.properties.color-scheme
-  - css.properties.color-scheme.only_dark
-  - css.properties.color-scheme.only_light
diff --git a/feature-group-definitions/compression-streams.dist.yml b/feature-group-definitions/compression-streams.dist.yml
deleted file mode 100644
index c32472d3a32..00000000000
--- a/feature-group-definitions/compression-streams.dist.yml
+++ /dev/null
@@ -1,34 +0,0 @@
-# Generated from: compression-streams.yml
-# Do not edit this file by hand. Edit the source file instead!
-
-name: Compression streams
-spec: https://wicg.github.io/compression/
-usage_stats:
-  - https://chromestatus.com/metrics/feature/timeline/popularity/3060 # CompressionStream
-  - https://chromestatus.com/metrics/feature/timeline/popularity/3061 # DecompressionStream
-status:
-  baseline: low
-  baseline_low_date: 2023-05-09
-  support:
-    chrome: "103"
-    chrome_android: "103"
-    edge: "103"
-    firefox: "113"
-    firefox_android: "113"
-    safari: "16.4"
-    safari_ios: "16.4"
-compat_features:
-  - api.CompressionStream
-  - api.CompressionStream.CompressionStream
-  - api.CompressionStream.CompressionStream.deflate
-  - api.CompressionStream.CompressionStream.deflate-raw
-  - api.CompressionStream.CompressionStream.gzip
-  - api.CompressionStream.readable
-  - api.CompressionStream.writable
-  - api.DecompressionStream
-  - api.DecompressionStream.DecompressionStream
-  - api.DecompressionStream.DecompressionStream.deflate
-  - api.DecompressionStream.DecompressionStream.deflate-raw
-  - api.DecompressionStream.DecompressionStream.gzip
-  - api.DecompressionStream.readable
-  - api.DecompressionStream.writable
diff --git a/feature-group-definitions/constructed-stylesheets.dist.yml b/feature-group-definitions/constructed-stylesheets.dist.yml
deleted file mode 100644
index e60c3e5ad1b..00000000000
--- a/feature-group-definitions/constructed-stylesheets.dist.yml
+++ /dev/null
@@ -1,22 +0,0 @@
-# Generated from: constructed-stylesheets.yml
-# Do not edit this file by hand. Edit the source file instead!
-
-name: Constructed stylesheets
-description: The `CSSStyleSheet` constructor creates a new stylesheet which can be shared between a document and multiple shadow roots using `adoptedStyleSheets`.
-spec:
-  - https://drafts.csswg.org/cssom-1/#dom-cssstylesheet-cssstylesheet
-  - https://drafts.csswg.org/cssom-1/#dom-documentorshadowroot-adoptedstylesheets
-usage_stats: https://chromestatus.com/metrics/feature/timeline/popularity/2846
-status:
-  baseline: false
-  support:
-    firefox: "101"
-    firefox_android: "101"
-    safari: "16.4"
-    safari_ios: "16.4"
-compat_features:
-  - api.CSSStyleSheet.CSSStyleSheet
-  - api.CSSStyleSheet.replace
-  - api.CSSStyleSheet.replaceSync
-  - api.Document.adoptedStyleSheets
-  - api.ShadowRoot.adoptedStyleSheets
diff --git a/feature-group-definitions/contain-intrinsic-size.dist.yml b/feature-group-definitions/contain-intrinsic-size.dist.yml
deleted file mode 100644
index 7f2964bbc0f..00000000000
--- a/feature-group-definitions/contain-intrinsic-size.dist.yml
+++ /dev/null
@@ -1,25 +0,0 @@
-# Generated from: contain-intrinsic-size.yml
-# Do not edit this file by hand. Edit the source file instead!
-
-name: contain-intrinsic-size
-spec: https://drafts.csswg.org/css-sizing-4/#intrinsic-size-override
-# Shown as "intrinsic-size" on chromestatus.com, but 651 is contain-intrinsic-size.
-usage_stats: https://chromestatus.com/metrics/css/timeline/popularity/651
-status:
-  baseline: low
-  baseline_low_date: 2023-09-18
-  support:
-    chrome: "117"
-    chrome_android: "117"
-    edge: "117"
-    firefox: "117"
-    firefox_android: "117"
-    safari: "17"
-    safari_ios: "17"
-compat_features:
-  - css.properties.contain-intrinsic-block-size
-  - css.properties.contain-intrinsic-height
-  - css.properties.contain-intrinsic-inline-size
-  - css.properties.contain-intrinsic-size
-  - css.properties.contain-intrinsic-size.auto_none
-  - css.properties.contain-intrinsic-width

From e18de02330c2d4e59464bd9acd2307884be2a78e Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Philip=20J=C3=A4genstedt?= <philip@foolip.org>
Date: Sat, 6 Apr 2024 18:22:51 +0200
Subject: [PATCH 3/4] Back out complicated D-Z

---
 feature-group-definitions/details.dist.yml    | 23 ------
 .../font-synthesis.dist.yml                   | 25 ------
 feature-group-definitions/fullscreen.dist.yml | 30 -------
 .../html-media-capture.dist.yml               | 15 ----
 .../intersection-observer.dist.yml            | 37 ---------
 feature-group-definitions/light-dark.dist.yml | 16 ----
 feature-group-definitions/line-clamp.dist.yml | 24 ------
 feature-group-definitions/mathml.dist.yml     | 81 -------------------
 .../min-max-clamp.dist.yml                    | 22 -----
 .../picture-in-picture.dist.yml               | 29 -------
 .../pointer-lock.dist.yml                     | 27 -------
 .../scroll-snap.dist.yml                      | 44 ----------
 .../show-picker-input.dist.yml                | 24 ------
 feature-group-definitions/slot.dist.yml       | 32 --------
 .../text-fragments.dist.yml                   | 18 -----
 .../text-wrap-balance.dist.yml                | 17 ----
 .../transforms2d.dist.yml                     | 35 --------
 .../transforms3d.dist.yml                     | 41 ----------
 .../visual-viewport.dist.yml                  | 29 -------
 19 files changed, 569 deletions(-)
 delete mode 100644 feature-group-definitions/details.dist.yml
 delete mode 100644 feature-group-definitions/font-synthesis.dist.yml
 delete mode 100644 feature-group-definitions/fullscreen.dist.yml
 delete mode 100644 feature-group-definitions/html-media-capture.dist.yml
 delete mode 100644 feature-group-definitions/intersection-observer.dist.yml
 delete mode 100644 feature-group-definitions/light-dark.dist.yml
 delete mode 100644 feature-group-definitions/line-clamp.dist.yml
 delete mode 100644 feature-group-definitions/mathml.dist.yml
 delete mode 100644 feature-group-definitions/min-max-clamp.dist.yml
 delete mode 100644 feature-group-definitions/picture-in-picture.dist.yml
 delete mode 100644 feature-group-definitions/pointer-lock.dist.yml
 delete mode 100644 feature-group-definitions/scroll-snap.dist.yml
 delete mode 100644 feature-group-definitions/show-picker-input.dist.yml
 delete mode 100644 feature-group-definitions/slot.dist.yml
 delete mode 100644 feature-group-definitions/text-fragments.dist.yml
 delete mode 100644 feature-group-definitions/text-wrap-balance.dist.yml
 delete mode 100644 feature-group-definitions/transforms2d.dist.yml
 delete mode 100644 feature-group-definitions/transforms3d.dist.yml
 delete mode 100644 feature-group-definitions/visual-viewport.dist.yml

diff --git a/feature-group-definitions/details.dist.yml b/feature-group-definitions/details.dist.yml
deleted file mode 100644
index fb46a63beb0..00000000000
--- a/feature-group-definitions/details.dist.yml
+++ /dev/null
@@ -1,23 +0,0 @@
-# Generated from: details.yml
-# Do not edit this file by hand. Edit the source file instead!
-
-name: <details>
-spec: https://html.spec.whatwg.org/multipage/interactive-elements.html#the-details-element
-status:
-  baseline: high
-  baseline_low_date: 2020-01-15
-  baseline_high_date: 2022-07-15
-  support:
-    chrome: "36"
-    chrome_android: "36"
-    edge: "79"
-    firefox: "49"
-    firefox_android: "49"
-    safari: "10.1"
-    safari_ios: "10.3"
-compat_features:
-  - api.HTMLDetailsElement
-  - api.HTMLDetailsElement.open
-  - api.HTMLDetailsElement.toggle_event
-  - html.elements.details
-  - html.elements.details.open
diff --git a/feature-group-definitions/font-synthesis.dist.yml b/feature-group-definitions/font-synthesis.dist.yml
deleted file mode 100644
index 13fb8833852..00000000000
--- a/feature-group-definitions/font-synthesis.dist.yml
+++ /dev/null
@@ -1,25 +0,0 @@
-# Generated from: font-synthesis.yml
-# Do not edit this file by hand. Edit the source file instead!
-
-name: font-synthesis
-spec: https://drafts.csswg.org/css-fonts-4/#font-synthesis-intro
-usage_stats:
-  - https://chromestatus.com/metrics/css/timeline/popularity/700 # font-synthesis-weight
-  - https://chromestatus.com/metrics/css/timeline/popularity/701 # font-synthesis-style
-  - https://chromestatus.com/metrics/css/timeline/popularity/703 # font-synthesis-small-caps
-  - https://chromestatus.com/metrics/css/timeline/popularity/704 # font-synthesis
-status:
-  baseline: false
-  support:
-    firefox: "118"
-    firefox_android: "118"
-compat_features:
-  - css.properties.font-synthesis-position
-  - css.properties.font-synthesis-small-caps
-  - css.properties.font-synthesis-style
-  - css.properties.font-synthesis-weight
-  - css.properties.font-synthesis
-  - css.properties.font-synthesis.position
-  - css.properties.font-synthesis.small-caps
-  - css.properties.font-synthesis.style
-  - css.properties.font-synthesis.weight
diff --git a/feature-group-definitions/fullscreen.dist.yml b/feature-group-definitions/fullscreen.dist.yml
deleted file mode 100644
index 7e122198d63..00000000000
--- a/feature-group-definitions/fullscreen.dist.yml
+++ /dev/null
@@ -1,30 +0,0 @@
-# Generated from: fullscreen.yml
-# Do not edit this file by hand. Edit the source file instead!
-
-name: Fullscreen API
-spec: https://fullscreen.spec.whatwg.org/
-caniuse: fullscreen
-status:
-  baseline: false
-  support:
-    edge: "79"
-    firefox: "64"
-    firefox_android: "64"
-compat_features:
-  - api.Document.exitFullscreen
-  - api.Document.exitFullscreen.returns_promise
-  - api.Document.fullscreen
-  - api.Document.fullscreenchange_event
-  - api.Document.fullscreenElement
-  - api.Document.fullscreenEnabled
-  - api.Document.fullscreenerror_event
-  - api.Element.fullscreenchange_event
-  - api.Element.fullscreenerror_event
-  - api.Element.requestFullscreen
-  - api.Element.requestFullscreen.returns_promise
-  - api.HTMLIFrameElement.allowFullscreen
-  - api.ShadowRoot.fullscreenElement
-  - css.selectors.backdrop.fullscreen
-  - css.selectors.fullscreen
-  - css.selectors.fullscreen.all_elements
-  - html.elements.iframe.allowfullscreen
diff --git a/feature-group-definitions/html-media-capture.dist.yml b/feature-group-definitions/html-media-capture.dist.yml
deleted file mode 100644
index 87633c7004e..00000000000
--- a/feature-group-definitions/html-media-capture.dist.yml
+++ /dev/null
@@ -1,15 +0,0 @@
-# Generated from: html-media-capture.yml
-# Do not edit this file by hand. Edit the source file instead!
-
-name: HTML media capture
-spec: https://w3c.github.io/html-media-capture/
-caniuse: html-media-capture
-status:
-  baseline: false
-  support:
-    chrome_android: "25"
-    firefox_android: "79"
-    safari_ios: "10"
-compat_features:
-  - api.HTMLInputElement.capture
-  - html.elements.input.capture
diff --git a/feature-group-definitions/intersection-observer.dist.yml b/feature-group-definitions/intersection-observer.dist.yml
deleted file mode 100644
index 23fdfaec3d3..00000000000
--- a/feature-group-definitions/intersection-observer.dist.yml
+++ /dev/null
@@ -1,37 +0,0 @@
-# Generated from: intersection-observer.yml
-# Do not edit this file by hand. Edit the source file instead!
-
-name: Intersection observer
-spec: https://w3c.github.io/IntersectionObserver/
-caniuse: intersectionobserver
-usage_stats: https://chromestatus.com/metrics/feature/timeline/popularity/1368
-status:
-  baseline: high
-  baseline_low_date: 2019-03-25
-  baseline_high_date: 2021-09-25
-  support:
-    chrome: "58"
-    chrome_android: "58"
-    edge: "16"
-    firefox: "55"
-    firefox_android: "55"
-    safari: "12.1"
-    safari_ios: "12.2"
-compat_features:
-  - api.IntersectionObserver
-  - api.IntersectionObserver.IntersectionObserver
-  - api.IntersectionObserver.disconnect
-  - api.IntersectionObserver.observe
-  - api.IntersectionObserver.root
-  - api.IntersectionObserver.rootMargin
-  - api.IntersectionObserver.takeRecords
-  - api.IntersectionObserver.thresholds
-  - api.IntersectionObserver.unobserve
-  - api.IntersectionObserverEntry
-  - api.IntersectionObserverEntry.boundingClientRect
-  - api.IntersectionObserverEntry.intersectionRatio
-  - api.IntersectionObserverEntry.intersectionRect
-  - api.IntersectionObserverEntry.isIntersecting
-  - api.IntersectionObserverEntry.rootBounds
-  - api.IntersectionObserverEntry.target
-  - api.IntersectionObserverEntry.time
diff --git a/feature-group-definitions/light-dark.dist.yml b/feature-group-definitions/light-dark.dist.yml
deleted file mode 100644
index 27c99ae25bd..00000000000
--- a/feature-group-definitions/light-dark.dist.yml
+++ /dev/null
@@ -1,16 +0,0 @@
-# Generated from: light-dark.yml
-# Do not edit this file by hand. Edit the source file instead!
-
-name: light-dark()
-description: The `light-dark()` CSS function accepts two colors and uses one depending on the current color scheme.
-spec: https://drafts.csswg.org/css-color-5/#light-dark
-status:
-  baseline: false
-  support:
-    chrome: "123"
-    chrome_android: "123"
-    firefox: "120"
-    firefox_android: "120"
-    safari: preview
-compat_features:
-  - css.types.color.light-dark
diff --git a/feature-group-definitions/line-clamp.dist.yml b/feature-group-definitions/line-clamp.dist.yml
deleted file mode 100644
index fb2ca7b8a47..00000000000
--- a/feature-group-definitions/line-clamp.dist.yml
+++ /dev/null
@@ -1,24 +0,0 @@
-# Generated from: line-clamp.yml
-# Do not edit this file by hand. Edit the source file instead!
-
-name: line-clamp
-spec: https://drafts.csswg.org/css-overflow-3/#line-clamp
-caniuse: css-line-clamp
-status:
-  baseline: high
-  baseline_low_date: 2019-07-09
-  baseline_high_date: 2022-01-09
-  support:
-    chrome: "6"
-    chrome_android: "18"
-    edge: "17"
-    firefox: "68"
-    firefox_android: "68"
-    safari: "5"
-    safari_ios: "4.2"
-compat_features:
-  # This is a weird one! Specified with a prefix:
-  # https://drafts.csswg.org/css-overflow-4/#propdef--webkit-line-clamp
-  - css.properties.-webkit-line-clamp
-  # This doesn't exist yet, but might in the future:
-  # - css.properties.line-clamp
diff --git a/feature-group-definitions/mathml.dist.yml b/feature-group-definitions/mathml.dist.yml
deleted file mode 100644
index 477c2b8361c..00000000000
--- a/feature-group-definitions/mathml.dist.yml
+++ /dev/null
@@ -1,81 +0,0 @@
-# Generated from: mathml.yml
-# Do not edit this file by hand. Edit the source file instead!
-
-name: MathML
-description: MathML, or the Mathematical Markup Language, describes mathematical notation, such as expressions and formulas. Also known as MathML Core.
-spec: https://w3c.github.io/mathml-core/
-caniuse: mathml
-status:
-  baseline: false
-  support:
-    chrome: "117"
-    chrome_android: "117"
-    edge: "117"
-    firefox: "110"
-    firefox_android: "110"
-compat_features:
-  - api.MathMLElement
-  - api.MathMLElement.autofocus
-  - api.MathMLElement.blur
-  - api.MathMLElement.dataset
-  - api.MathMLElement.focus
-  - api.MathMLElement.style
-  - api.MathMLElement.tabIndex
-  - mathml.elements.math
-  - mathml.elements.math.display
-  - mathml.elements.merror
-  - mathml.elements.mfrac
-  - mathml.elements.mfrac.linethickness
-  - mathml.elements.mi
-  - mathml.elements.mi.mathvariant
-  - mathml.elements.mmultiscripts
-  - mathml.elements.mn
-  - mathml.elements.mo
-  - mathml.elements.mo.form
-  - mathml.elements.mo.largeop
-  - mathml.elements.mo.lspace
-  - mathml.elements.mo.maxsize
-  - mathml.elements.mo.minsize
-  - mathml.elements.mo.moveablelimits
-  - mathml.elements.mo.rspace
-  - mathml.elements.mo.stretchy
-  - mathml.elements.mo.symmetric
-  - mathml.elements.mover
-  - mathml.elements.mover.accent
-  - mathml.elements.mpadded
-  - mathml.elements.mpadded.depth
-  - mathml.elements.mpadded.height
-  - mathml.elements.mpadded.lspace
-  - mathml.elements.mpadded.voffset
-  - mathml.elements.mpadded.width
-  - mathml.elements.mphantom
-  - mathml.elements.mroot
-  - mathml.elements.mrow
-  - mathml.elements.ms
-  - mathml.elements.mspace
-  - mathml.elements.mspace.depth
-  - mathml.elements.mspace.height
-  - mathml.elements.mspace.width
-  - mathml.elements.msqrt
-  - mathml.elements.mstyle
-  - mathml.elements.msub
-  - mathml.elements.msubsup
-  - mathml.elements.msup
-  - mathml.elements.mtable
-  - mathml.elements.mtd
-  - mathml.elements.mtd.columnspan
-  - mathml.elements.mtd.rowspan
-  - mathml.elements.mtext
-  - mathml.elements.mtr
-  - mathml.elements.munder
-  - mathml.elements.munder.accentunder
-  - mathml.elements.munderover
-  - mathml.elements.munderover.accent
-  - mathml.elements.munderover.accentunder
-  - mathml.elements.semantics
-  - mathml.global_attributes.dir
-  - mathml.global_attributes.displaystyle
-  - mathml.global_attributes.mathbackground
-  - mathml.global_attributes.mathcolor
-  - mathml.global_attributes.mathsize
-  - mathml.global_attributes.scriptlevel # TODO: when setting Baseline status, we'll probably want to ignore this. It's the one piece not interopable and has an odd story.
diff --git a/feature-group-definitions/min-max-clamp.dist.yml b/feature-group-definitions/min-max-clamp.dist.yml
deleted file mode 100644
index 0f05b217528..00000000000
--- a/feature-group-definitions/min-max-clamp.dist.yml
+++ /dev/null
@@ -1,22 +0,0 @@
-# Generated from: min-max-clamp.yml
-# Do not edit this file by hand. Edit the source file instead!
-
-name: min(), max(), and clamp()
-description: The `min()` and `max()` CSS functions return the minimum or maximum of the arguments, while `clamp()` clamps a value to a given range.
-spec: https://drafts.csswg.org/css-values-4/#comp-func
-status:
-  baseline: high
-  baseline_low_date: 2020-07-28
-  baseline_high_date: 2023-01-28
-  support:
-    chrome: "79"
-    chrome_android: "79"
-    edge: "79"
-    firefox: "75"
-    firefox_android: "79"
-    safari: "13.1"
-    safari_ios: "13.4"
-compat_features:
-  - css.types.min
-  - css.types.max
-  - css.types.clamp
diff --git a/feature-group-definitions/picture-in-picture.dist.yml b/feature-group-definitions/picture-in-picture.dist.yml
deleted file mode 100644
index 0c3718317f3..00000000000
--- a/feature-group-definitions/picture-in-picture.dist.yml
+++ /dev/null
@@ -1,29 +0,0 @@
-# Generated from: picture-in-picture.yml
-# Do not edit this file by hand. Edit the source file instead!
-
-name: Picture-in-picture
-spec: https://w3c.github.io/picture-in-picture/
-caniuse: picture-in-picture
-usage_stats: https://chromestatus.com/metrics/feature/timeline/popularity/2444
-status:
-  baseline: false
-  support:
-    chrome: "110"
-compat_features:
-  - api.Document.exitPictureInPicture
-  - api.Document.pictureInPictureElement
-  - api.Document.pictureInPictureEnabled
-  - api.HTMLVideoElement.disablePictureInPicture
-  - api.HTMLVideoElement.enterpictureinpicture_event
-  - api.HTMLVideoElement.leavepictureinpicture_event
-  - api.HTMLVideoElement.requestPictureInPicture
-  - api.PictureInPictureEvent
-  - api.PictureInPictureEvent.PictureInPictureEvent
-  - api.PictureInPictureEvent.pictureInPictureWindow
-  - api.PictureInPictureWindow
-  - api.PictureInPictureWindow.height
-  - api.PictureInPictureWindow.resize_event
-  - api.PictureInPictureWindow.width
-  - api.ShadowRoot.pictureInPictureElement
-  - css.selectors.picture-in-picture
-  - http.headers.Permissions-Policy.picture-in-picture
diff --git a/feature-group-definitions/pointer-lock.dist.yml b/feature-group-definitions/pointer-lock.dist.yml
deleted file mode 100644
index d5d33e90ac7..00000000000
--- a/feature-group-definitions/pointer-lock.dist.yml
+++ /dev/null
@@ -1,27 +0,0 @@
-# Generated from: pointer-lock.yml
-# Do not edit this file by hand. Edit the source file instead!
-
-name: Pointer lock
-description: Provides access to raw mouse movement by locking the target of mouse events to a single element and hiding the mouse cursor.
-spec: https://w3c.github.io/pointerlock/
-caniuse: pointerlock
-usage_stats: https://chromestatus.com/metrics/feature/timeline/popularity/417
-status:
-  baseline: false
-  support:
-    chrome: "53"
-    chrome_android: "53"
-    edge: "79"
-    firefox: "63"
-    firefox_android: "63"
-    safari: "10.1"
-compat_features:
-  - api.Document.exitPointerLock
-  - api.Document.pointerlockchange_event
-  - api.Document.pointerLockElement
-  - api.Document.pointerlockerror_event
-  - api.Element.requestPointerLock
-  - api.MouseEvent.movementX
-  - api.MouseEvent.movementY
-  - api.ShadowRoot.pointerLockElement
-  - html.elements.iframe.sandbox.allow-pointer-lock
diff --git a/feature-group-definitions/scroll-snap.dist.yml b/feature-group-definitions/scroll-snap.dist.yml
deleted file mode 100644
index c35cc36f935..00000000000
--- a/feature-group-definitions/scroll-snap.dist.yml
+++ /dev/null
@@ -1,44 +0,0 @@
-# Generated from: scroll-snap.yml
-# Do not edit this file by hand. Edit the source file instead!
-
-name: Scroll snap
-spec: https://drafts.csswg.org/css-scroll-snap-1/
-caniuse: css-snappoints
-usage_stats: https://chromestatus.com/metrics/css/timeline/popularity/499
-status:
-  baseline: low
-  baseline_low_date: 2022-07-26
-  support:
-    chrome: "75"
-    chrome_android: "75"
-    edge: "79"
-    firefox: "103"
-    firefox_android: "103"
-    safari: "15"
-    safari_ios: "15"
-compat_features:
-  - css.properties.scroll-margin-block-end
-  - css.properties.scroll-margin-block-start
-  - css.properties.scroll-margin-block
-  - css.properties.scroll-margin-bottom
-  - css.properties.scroll-margin-inline-end
-  - css.properties.scroll-margin-inline-start
-  - css.properties.scroll-margin-inline
-  - css.properties.scroll-margin-left
-  - css.properties.scroll-margin-right
-  - css.properties.scroll-margin-top
-  - css.properties.scroll-margin
-  - css.properties.scroll-padding-block-end
-  - css.properties.scroll-padding-block-start
-  - css.properties.scroll-padding-block
-  - css.properties.scroll-padding-bottom
-  - css.properties.scroll-padding-inline-end
-  - css.properties.scroll-padding-inline-start
-  - css.properties.scroll-padding-inline
-  - css.properties.scroll-padding-left
-  - css.properties.scroll-padding-right
-  - css.properties.scroll-padding-top
-  - css.properties.scroll-padding
-  - css.properties.scroll-snap-align
-  - css.properties.scroll-snap-stop
-  - css.properties.scroll-snap-type
diff --git a/feature-group-definitions/show-picker-input.dist.yml b/feature-group-definitions/show-picker-input.dist.yml
deleted file mode 100644
index 041c70566cb..00000000000
--- a/feature-group-definitions/show-picker-input.dist.yml
+++ /dev/null
@@ -1,24 +0,0 @@
-# Generated from: show-picker-input.yml
-# Do not edit this file by hand. Edit the source file instead!
-
-name: showPicker() for <input>
-description: The `showPicker()` method for `<input>` elements shows the user interface for picking a value. For example, for `<input type="date">` it shows the interface for picking a date.
-spec: https://html.spec.whatwg.org/multipage/input.html#dom-input-showpicker
-usage_stats: https://chromestatus.com/metrics/feature/timeline/popularity/4097
-status:
-  baseline: false
-  support:
-    chrome: "99"
-    chrome_android: "99"
-    edge: "99"
-compat_features:
-  - api.HTMLInputElement.showPicker
-  - api.HTMLInputElement.showPicker.autocomplete_input
-  - api.HTMLInputElement.showPicker.color_input
-  - api.HTMLInputElement.showPicker.datalist_input
-  - api.HTMLInputElement.showPicker.date_input
-  - api.HTMLInputElement.showPicker.datetime_local_input
-  - api.HTMLInputElement.showPicker.file_input
-  - api.HTMLInputElement.showPicker.month_input
-  - api.HTMLInputElement.showPicker.time_input
-  - api.HTMLInputElement.showPicker.week_input
diff --git a/feature-group-definitions/slot.dist.yml b/feature-group-definitions/slot.dist.yml
deleted file mode 100644
index 492f0585981..00000000000
--- a/feature-group-definitions/slot.dist.yml
+++ /dev/null
@@ -1,32 +0,0 @@
-# Generated from: slot.yml
-# Do not edit this file by hand. Edit the source file instead!
-
-name: <slot>
-spec: https://html.spec.whatwg.org/multipage/scripting.html#the-slot-element
-usage_stats: https://chromestatus.com/metrics/feature/timeline/popularity/1898
-status:
-  baseline: low
-  baseline_low_date: 2023-03-27
-  support:
-    chrome: "86"
-    chrome_android: "86"
-    edge: "86"
-    firefox: "92"
-    firefox_android: "92"
-    safari: "16.4"
-    safari_ios: "16.4"
-compat_features:
-  - api.Element.assignedSlot
-  - api.Element.slot
-  - api.HTMLSlotElement
-  - api.HTMLSlotElement.assign
-  - api.HTMLSlotElement.assignedElements
-  - api.HTMLSlotElement.assignedNodes
-  - api.HTMLSlotElement.name
-  - api.HTMLSlotElement.slotchange_event
-  - api.ShadowRoot.slotAssignment
-  - api.Text.assignedSlot
-  - css.selectors.slotted
-  - html.elements.slot
-  - html.elements.slot.name
-  - html.global_attributes.slot
diff --git a/feature-group-definitions/text-fragments.dist.yml b/feature-group-definitions/text-fragments.dist.yml
deleted file mode 100644
index d9fed89baca..00000000000
--- a/feature-group-definitions/text-fragments.dist.yml
+++ /dev/null
@@ -1,18 +0,0 @@
-# Generated from: text-fragments.yml
-# Do not edit this file by hand. Edit the source file instead!
-
-name: Text fragments
-description: Text fragments link to a snippet of text within a page. The browser may scroll, highlight, or otherwise bring that text to the reader's attention. The text is specified in a URL fragment on the form `#:~:text=snippet` and can be styled using the `::target-text` pseudo-element.
-spec: https://wicg.github.io/scroll-to-text-fragment/
-usage_stats: https://chromestatus.com/metrics/feature/timeline/popularity/2901
-caniuse: url-scroll-to-text-fragment
-status:
-  baseline: false
-  support:
-    chrome: "89"
-    chrome_android: "89"
-    edge: "89"
-compat_features:
-  - api.Document.fragmentDirective
-  - api.FragmentDirective
-  - css.selectors.target-text
diff --git a/feature-group-definitions/text-wrap-balance.dist.yml b/feature-group-definitions/text-wrap-balance.dist.yml
deleted file mode 100644
index ce47734d409..00000000000
--- a/feature-group-definitions/text-wrap-balance.dist.yml
+++ /dev/null
@@ -1,17 +0,0 @@
-# Generated from: text-wrap-balance.yml
-# Do not edit this file by hand. Edit the source file instead!
-
-name: "text-wrap: balance"
-spec: https://drafts.csswg.org/css-text-4/#valdef-text-wrap-style-balance
-usage_stats: https://chromestatus.com/metrics/feature/timeline/popularity/4673
-status:
-  baseline: false
-  support:
-    chrome: "114"
-    chrome_android: "114"
-    edge: "114"
-    firefox: "121"
-    firefox_android: "121"
-    safari: preview
-compat_features:
-  - css.properties.text-wrap.balance
diff --git a/feature-group-definitions/transforms2d.dist.yml b/feature-group-definitions/transforms2d.dist.yml
deleted file mode 100644
index a9577b4cd1f..00000000000
--- a/feature-group-definitions/transforms2d.dist.yml
+++ /dev/null
@@ -1,35 +0,0 @@
-# Generated from: transforms2d.yml
-# Do not edit this file by hand. Edit the source file instead!
-
-name: 2D transforms
-description: The `transform` CSS property and its 2D transform functions allow rotating, scaling, skewing, and translating an element. Arbitrary 2D transforms are also possible using a transformation matrix.
-caniuse: transforms2d
-spec: https://drafts.csswg.org/css-transforms-1/
-status:
-  baseline: high
-  baseline_low_date: 2020-01-15
-  baseline_high_date: 2022-07-15
-  support:
-    chrome: "64"
-    chrome_android: "64"
-    edge: "79"
-    firefox: "55"
-    firefox_android: "55"
-    safari: "11"
-    safari_ios: "11"
-compat_features:
-  - css.properties.transform
-  - css.properties.transform-box
-  - css.properties.transform-origin
-  - css.types.transform-function
-  - css.types.transform-function.matrix
-  - css.types.transform-function.rotate
-  - css.types.transform-function.scale
-  - css.types.transform-function.scaleX
-  - css.types.transform-function.scaleY
-  - css.types.transform-function.skew
-  - css.types.transform-function.skewX
-  - css.types.transform-function.skewY
-  - css.types.transform-function.translate
-  - css.types.transform-function.translateX
-  - css.types.transform-function.translateY
diff --git a/feature-group-definitions/transforms3d.dist.yml b/feature-group-definitions/transforms3d.dist.yml
deleted file mode 100644
index 6741eec37b9..00000000000
--- a/feature-group-definitions/transforms3d.dist.yml
+++ /dev/null
@@ -1,41 +0,0 @@
-# Generated from: transforms3d.yml
-# Do not edit this file by hand. Edit the source file instead!
-
-name: 3D transforms
-description: The `transform` CSS property and its 3D transform functions allow rotations and other transforms in three dimensions, including perspective transforms.
-caniuse: transforms3d
-spec: https://drafts.csswg.org/css-transforms-2/
-status:
-  baseline: low
-  baseline_low_date: 2022-03-14
-  support:
-    chrome: "83"
-    chrome_android: "83"
-    edge: "12"
-    firefox: "72"
-    firefox_android: "79"
-    safari: "15.4"
-    safari_ios: "15.4"
-compat_features:
-  - css.properties.backface-visibility
-  - css.properties.perspective-origin
-  - css.properties.perspective-origin.bottom
-  - css.properties.perspective-origin.center
-  - css.properties.perspective-origin.left
-  - css.properties.perspective-origin.right
-  - css.properties.perspective-origin.top
-  - css.properties.perspective
-  - css.properties.perspective.none
-  - css.properties.transform-style
-  - css.properties.transform.3d
-  # https://drafts.csswg.org/css-transforms-2/#three-d-transform-functions
-  - css.types.transform-function.matrix3d
-  - css.types.transform-function.translate3d
-  - css.types.transform-function.translateZ
-  - css.types.transform-function.scale3d
-  - css.types.transform-function.scaleZ
-  - css.types.transform-function.rotate3d
-  - css.types.transform-function.rotateX
-  - css.types.transform-function.rotateY
-  - css.types.transform-function.rotateZ
-  - css.types.transform-function.perspective
diff --git a/feature-group-definitions/visual-viewport.dist.yml b/feature-group-definitions/visual-viewport.dist.yml
deleted file mode 100644
index db44e456472..00000000000
--- a/feature-group-definitions/visual-viewport.dist.yml
+++ /dev/null
@@ -1,29 +0,0 @@
-# Generated from: visual-viewport.yml
-# Do not edit this file by hand. Edit the source file instead!
-
-name: Visual viewport API
-spec: https://drafts.csswg.org/cssom-view-1/#visualViewport
-status:
-  baseline: high
-  baseline_low_date: 2021-08-10
-  baseline_high_date: 2024-02-10
-  support:
-    chrome: "62"
-    chrome_android: "62"
-    edge: "79"
-    firefox: "91"
-    firefox_android: "68"
-    safari: "13"
-    safari_ios: "13"
-compat_features:
-  - api.VisualViewport
-  - api.VisualViewport.height
-  - api.VisualViewport.offsetLeft
-  - api.VisualViewport.offsetTop
-  - api.VisualViewport.pageLeft
-  - api.VisualViewport.pageTop
-  - api.VisualViewport.resize_event
-  - api.VisualViewport.scale
-  - api.VisualViewport.scroll_event
-  - api.VisualViewport.width
-  - api.Window.visualViewport

From 49a3d8009c42408b5531c92ae3c4c0dfdb9caea8 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Philip=20J=C3=A4genstedt?= <philip@foolip.org>
Date: Sat, 6 Apr 2024 18:33:44 +0200
Subject: [PATCH 4/4] Back out caniuse contradictions

---
 .../backdrop-filter.dist.yml                  | 17 --------------
 .../declarative-shadow-dom.dist.yml           | 22 -------------------
 .../search-input-type.dist.yml                | 20 -----------------
 3 files changed, 59 deletions(-)
 delete mode 100644 feature-group-definitions/backdrop-filter.dist.yml
 delete mode 100644 feature-group-definitions/declarative-shadow-dom.dist.yml
 delete mode 100644 feature-group-definitions/search-input-type.dist.yml

diff --git a/feature-group-definitions/backdrop-filter.dist.yml b/feature-group-definitions/backdrop-filter.dist.yml
deleted file mode 100644
index 11b8cc241b0..00000000000
--- a/feature-group-definitions/backdrop-filter.dist.yml
+++ /dev/null
@@ -1,17 +0,0 @@
-# Generated from: backdrop-filter.yml
-# Do not edit this file by hand. Edit the source file instead!
-
-name: backdrop-filter
-description: The `backdrop-filter` CSS property applies graphical effects such as blurring or color shifting to the area behind an element.
-spec: https://drafts.fxtf.org/filter-effects-2/#BackdropFilterProperty
-caniuse: css-backdrop-filter
-status:
-  baseline: false
-  support:
-    chrome: "76"
-    chrome_android: "76"
-    edge: "17"
-    firefox: "103"
-    firefox_android: "103"
-compat_features:
-  - css.properties.backdrop-filter
diff --git a/feature-group-definitions/declarative-shadow-dom.dist.yml b/feature-group-definitions/declarative-shadow-dom.dist.yml
deleted file mode 100644
index 058de174e01..00000000000
--- a/feature-group-definitions/declarative-shadow-dom.dist.yml
+++ /dev/null
@@ -1,22 +0,0 @@
-# Generated from: declarative-shadow-dom.yml
-# Do not edit this file by hand. Edit the source file instead!
-
-name: Declarative shadow DOM
-description: The `shadowrootmode` attribute on `<template>` creates a shadow root without the use of JavaScript. It is a declarative alternative to the `attachShadow()` method.
-spec: https://html.spec.whatwg.org/multipage/scripting.html#attr-template-shadowrootmode
-caniuse: declarative-shadow-dom
-usage_stats: https://chromestatus.com/metrics/feature/timeline/popularity/4421
-status:
-  baseline: low
-  baseline_low_date: 2024-02-20
-  support:
-    chrome: "111"
-    chrome_android: "111"
-    edge: "111"
-    firefox: "123"
-    firefox_android: "123"
-    safari: "16.4"
-    safari_ios: "16.4"
-compat_features:
-  - api.HTMLTemplateElement.shadowRootMode
-  - html.elements.template.shadowrootmode
diff --git a/feature-group-definitions/search-input-type.dist.yml b/feature-group-definitions/search-input-type.dist.yml
deleted file mode 100644
index 3d266fc7257..00000000000
--- a/feature-group-definitions/search-input-type.dist.yml
+++ /dev/null
@@ -1,20 +0,0 @@
-# Generated from: search-input-type.yml
-# Do not edit this file by hand. Edit the source file instead!
-
-name: '<input type="search">'
-spec: https://html.spec.whatwg.org/multipage/input.html#text-(type=text)-state-and-search-state-(type=search)
-caniuse: input-search
-status:
-  baseline: high
-  baseline_low_date: 2015-07-29
-  baseline_high_date: 2018-01-29
-  support:
-    chrome: "5"
-    chrome_android: "18"
-    edge: "12"
-    firefox: "4"
-    firefox_android: "4"
-    safari: "5"
-    safari_ios: "4.2"
-compat_features:
-  - html.elements.input.type_search