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<!DOCTYPE html>
<title>The revert-rule keyword: interaction with !important</title>
<link rel="help" href="https://drafts.csswg.org/css-cascade-5/#revert-rule-keyword">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<style>
#test1 {
color: revert-rule !important;
}
#test1 {
color: green;
}
</style>
<div id="test1"></div>
<script>
test(() => {
assert_true(CSS.supports('color:revert-rule'));
assert_equals(getComputedStyle(test1).color, 'rgb(0, 128, 0)');
}, 'revert-rule in !important declaration reverts to later normal rule if the !important rule comes first');
</script>
<style>
@layer {
#test2 {
color: revert-rule !important;
}
}
#test2 {
color: green;
}
</style>
<div id='test2'></div>
<script>
test(() => {
assert_equals(getComputedStyle(test2).color, 'rgb(0, 128, 0)');
}, 'revert-rule in !important declaration reverts across layers');
</script>
<style>
#test3 {
color: green;
}
#test3 {
color: revert-rule !important;
}
</style>
<div id='test3'></div>
<script>
test(() => {
assert_equals(getComputedStyle(test3).color, 'rgb(0, 128, 0)');
}, 'revert-rule in !important declaration reverts to earlier normal rule if the !important rule comes later');
</script>
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