From 61db19cfb813e44a9af9cf0aaf15e9188dbdd982 Mon Sep 17 00:00:00 2001
From: jsnanigans <megamaaaan@gmail.com>
Date: Sun, 18 Mar 2018 13:05:15 +0100
Subject: [PATCH] Check if selector starts with integer beore adding it

---
 __tests__/purgecssDefault.test.js | 30 ++++++++++++++++++++++++++++++
 src/index.js                      |  3 ++-
 2 files changed, 32 insertions(+), 1 deletion(-)

diff --git a/__tests__/purgecssDefault.test.js b/__tests__/purgecssDefault.test.js
index 76bc448c..714c4373 100644
--- a/__tests__/purgecssDefault.test.js
+++ b/__tests__/purgecssDefault.test.js
@@ -308,6 +308,36 @@ describe('purge methods with files and default extractor', () => {
             expect(purgecssResult.includes(`src: url('xxx')`)).toBe(false)
         })
     })
+
+    describe('keep keyframe decimals', () => {
+        let purgecssResult
+        beforeAll(() => {
+            purgecssResult = new Purgecss({
+                content: [
+                    {
+                        raw: '<div class="xx"></div>',
+                        extension: 'html'
+                    }
+                ],
+                css: [
+                    {
+                        raw: `
+                    @keyframes xxx {
+                        0% {opacity: 0;}
+                        99.9% {opacity: 1;}
+                    }
+                    .xx { animation: xxx 200ms linear both }
+                    `
+                    }
+                ],
+                keyframes: false
+            }).purge()[0].css
+            // console.log(purgecssResult)
+        })
+        it('keeps `99.9%`', () => {
+            expect(purgecssResult.includes('99.9%')).toBe(true)
+        })
+    })
 })
 
 describe('purge methods with raw content and default extractor', () => {
diff --git a/src/index.js b/src/index.js
index 2107f9a3..23b9767f 100644
--- a/src/index.js
+++ b/src/index.js
@@ -283,7 +283,8 @@ class Purgecss {
                     for (const { type, value } of selector.nodes) {
                         if (
                             SELECTOR_STANDARD_TYPES.includes(type) &&
-                            typeof value !== 'undefined'
+                            typeof value !== 'undefined' &&
+                            /^\d/g.test(value) === false
                         ) {
                             selectorsInRule.push(value)
                         } else if (