diff --git a/source b/source
index e0901cbc3fc..f89180cbdfb 100644
--- a/source
+++ b/source
@@ -70318,41 +70318,33 @@ contradict people?
    <dt><dfn selector noexport><code data-x="selector-active">:active</code></dfn></dt>
    <dd>
     <p>The <code data-x="selector-active">:active</code> <span>pseudo-class</span> is defined to
-    match an element
-    <q cite="https://drafts.csswg.org/selectors3/#the-user-action-pseudo-classes-hover-act">while an
-    element is <dfn><i data-x="concept-selector-active">being activated</i></dfn> by the user</q>.</p>
+    match an element <q cite="https://drafts.csswg.org/selectors/#the-active-pseudo">while an
+    element is <dfn><i data-x="concept-selector-active">being activated</i></dfn> by the
+    user</q>.</p>
 
     <p>To determine whether a particular element is <i data-x="concept-selector-active">being activated</i> for the purposes of
     defining the <code data-x="selector-active">:active</code> <span>pseudo-class</span> only, an
     HTML user agent must use the first relevant entry in the following list.</p>
 
     <dl>
-     <dt>If the element has a descendant that is currently matching the <code
-     data-x="selector-active">:active</code> <span>pseudo-class</span></dt>
-     <dd><p>The element is <i data-x="concept-selector-active">being activated</i>.</p></dd>
-
-     <!-- this even trumps the <button disabled> stuff below:
-            https://software.hixie.ch/utilities/js/live-dom-viewer/?saved=3355
-            https://software.hixie.ch/utilities/js/live-dom-viewer/?saved=3356
-       -->
-
      <dt>If the element is the <span>labeled control</span> of a <code>label</code> element that is
      currently matching <code data-x="selector-active">:active</code></dt>
      <dd><p>The element is <i data-x="concept-selector-active">being activated</i>.</p></dd>
 
-     <!-- this even trumps the <button disabled> stuff below:
-            https://software.hixie.ch/utilities/js/live-dom-viewer/?saved=3354
-       -->
-
      <dt>If the element is a <code>button</code> element</dt>
      <dt>If the element is an <code>input</code> element whose <code
      data-x="attr-input-type">type</code> attribute is in the <span
      data-x="attr-input-type-submit">Submit Button</span>, <span
      data-x="attr-input-type-image">Image Button</span>, <span data-x="attr-input-type-reset">Reset
      Button</span>, or <span data-x="attr-input-type-button">Button</span> state</dt>
+     <dt>If the element is an <code>a</code> element that has an <code
+     data-x="attr-hyperlink-href">href</code> attribute</dt>
+     <dt>If the element is an <code>area</code> element that has an <code
+     data-x="attr-hyperlink-href">href</code> attribute</dt>
+     <dt>If the element is <span>focusable</span></dt>
      <dd>
-      <p>The element is <i data-x="concept-selector-active">being activated</i> if it is <span>in a formal activation state</span>
-      and it is not <span data-x="concept-fe-disabled">disabled</span>.</p>
+      <p>The element is <i data-x="concept-selector-active">being activated</i> if it is <span>in a
+      formal activation state</span>.</p>
 
       <p class="example">For example, if the user is using a keyboard to push a <code>button</code>
       element by pressing the space bar, the element would match this <span>pseudo-class</span> in
@@ -70360,16 +70352,6 @@ contradict people?
       event and the time the element received the <code data-x="event-keyup">keyup</code> event.</p>
      </dd>
 
-     <dt>If the element is an <code>a</code> element that has an <code
-     data-x="attr-hyperlink-href">href</code> attribute</dt>
-     <dt>If the element is an <code>area</code> element that has an <code
-     data-x="attr-hyperlink-href">href</code> attribute</dt>
-     <dt>If the element is a <code>link</code> element that has an <code
-     data-x="attr-link-href">href</code> attribute</dt>
-     <dt>If the element is <span>focusable</span></dt>
-     <dd><p>The element is <i data-x="concept-selector-active">being activated</i> if it is <span>in a formal activation
-     state</span>.</p></dd>
-
      <dt>If the element is <span>being actively pointed at</span></dt>
      <dd><p>The element is <i data-x="concept-selector-active">being activated</i>.</p></dd>
     </dl>
@@ -70384,31 +70366,36 @@ contradict people?
     element using a pointing device while that pointing device is in the "down" state (e.g. for a
     mouse, between the time the mouse button is pressed and the time it is depressed; for a finger
     in a multitouch environment, while the finger is touching the display surface).</p>
+
+    <p class="note">Per the definition in <cite>Selectors</cite>, <code
+    data-x="selector-active">:active</code> also matches <span>flat tree</span> ancestors of
+    elements that are <i data-x="concept-selector-active">being activated</i>. <ref
+    spec=SELECTORS></p>
    </dd>
 
    <dt><dfn selector noexport><code data-x="selector-hover">:hover</code></dfn></dt>
    <dd>
-    <p>The <code data-x="selector-hover">:hover</code> <span>pseudo-class</span> is defined to match
-    an element <q
-    cite="https://drafts.csswg.org/selectors3/#the-user-action-pseudo-classes-hover-act">while the
-    user <i>designates</i> an element with a pointing device</q>. For the purposes of defining the
-    <code data-x="selector-hover">:hover</code> <span>pseudo-class</span> only, an HTML user agent
-    must consider an element as being one that the user <i>designates</i> if it is:</p>
+    <p>The <code data-x="selector-hover">:hover</code> <span>pseudo-class</span> is defined to
+    match an element <q cite="https://drafts.csswg.org/selectors/#the-hover-pseudo">while the user
+    <dfn><i data-x="concept-selector-hover">designates</i></dfn> an element with a pointing
+    device</q>. For the purposes of defining the <code data-x="selector-hover">:hover</code>
+    <span>pseudo-class</span> only, an HTML user agent must consider an element as being one that
+    the user <i data-x="concept-selector-hover">designates</i> if it is:</p>
 
     <ul>
      <li>
       <p>An element that the user indicates using a pointing device.</p>
      </li>
 
-     <li>
-      <p>An element that has a descendant that the user indicates using a pointing device.</p>
-     </li>
-
      <li>
       <p>An element that is the <span>labeled control</span> of a <code>label</code> element that is
       currently matching <code data-x="selector-hover">:hover</code>.</p>
      </li>
     </ul>
+
+    <p class="note">Per the definition in <cite>Selectors</cite>, <code
+    data-x="selector-hover">:hover</code> also matches <span>flat tree</span> ancestors of elements
+    that are <i data-x="concept-selector-hover">designated</i>. <ref spec=SELECTORS></p>
 <!--
 Demos:
  https://software.hixie.ch/utilities/js/live-dom-viewer/?saved=1315