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Test Info: Warnings
- This test has a WPT meta file that expects 1 subtest issues.
- This WPT test may be referenced by the following Test IDs:
- /css/css-cascade/revert-val-007.html - WPT Dashboard Interop Dashboard
<!DOCTYPE html>
<title>CSS Cascade: 'revert' in keyframe animations on identical elements</title>
<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>