| <!DOCTYPE html> |
| <title>CSS Cascade: 'revert' in keyframe animations on identical elements</title> |
| <link rel="help" href="https://drafts.csswg.org/css-cascade/#default"> |
| <link rel="help" href="https://crbug.com/1065387"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <style> |
| @keyframes test { |
| from { margin-top: revert; } |
| to { margin-top: 100px; } |
| } |
| .anim { |
| margin-top: 0px; |
| animation: test linear 1s paused; |
| } |
| </style> |
| <h1 class="anim"></h1> |
| <h1 class="anim"></h1> |
| <h1 class="anim"></h1> |
| <h1 id=ref></h1> |
| <script> |
| test(function() { |
| // This querySelectorAll includes #ref, but that's OK. |
| let targets = document.querySelectorAll('h1'); |
| for (let t of targets) { |
| let actual = getComputedStyle(t).marginTop; |
| let expected = getComputedStyle(ref).marginTop; |
| // This test assumes that the UA style sheet sets a non-0px value on |
| // <h1> elements: |
| assert_not_equals(expected, '0px'); |
| assert_equals(actual, expected); |
| } |
| }, 'A @keyframe animation with revert works when applied to multiple identical elements'); |
| </script> |