| <!DOCTYPE html> |
| <title>CSS Cascade: 'revert' keyword in keyframe animations</title> |
| <link rel="help" href="https://drafts.csswg.org/css-cascade/#default"> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <style> |
| @keyframes test { |
| from { margin-top: 0px; } |
| 50% { margin-top: revert; } |
| to { margin-top: 0px; } |
| } |
| #h1 { |
| margin-top: 0px; |
| animation: test linear 1000s -500s; |
| } |
| </style> |
| <h1 id=h1></h1> |
| <h1 id=ref></h1> |
| <script> |
| test(function() { |
| let actual = getComputedStyle(h1).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); |
| }, 'The revert keyword works with @keyframes'); |
| </script> |
