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Test Info: Warnings
- This test has a WPT meta file that expects 2 subtest issues.
- This WPT test may be referenced by the following Test IDs:
- /css/css-animations/revert-rule-keyframes.html - WPT Dashboard Interop Dashboard
<!DOCTYPE html>
<title>CSS Animations: revert-rule in keyframes</title>
<link rel="help" href="https://drafts.csswg.org/css-cascade-5/#revert-rule-keyword">
<link rel="help" href="https://drafts.csswg.org/css-animations/">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<style>
@property --x {
syntax: "<length>";
inherits: false;
initial-value: 0px;
}
@keyframes anim {
from {
width: revert-rule;
--x: revert-rule;
}
to {
width: 200px;
--x: 200px;
}
}
#target {
width: 100px;
--x: 100px;
animation: anim 3600s steps(2, start);
}
</style>
<div id="target"></div>
<script>
test(() => {
assert_true(CSS.supports('color', 'revert-rule'));
assert_equals(getComputedStyle(target).width, '150px');
}, 'revert-rule in keyframes (width)');
test(() => {
assert_true(CSS.supports('color', 'revert-rule'));
assert_equals(getComputedStyle(target).getPropertyValue('--x'), '150px');
}, 'revert-rule in keyframes (--x)');
</script>