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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-contain/container-queries/pseudo-elements-005.html - WPT Dashboard Interop Dashboard
<!doctype html>
<title>CSS Container Queries Test: Style container for pseudo elements</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="support/cq-testcommon.js"></script>
<style>
#c1 {
--theme: green;
}
@container style(--theme: green) {
#c1::before {
content: "";
color: green;
display: block;
height: 100px;
}
}
</style>
<div id="c1"></div>
<script>
setup(() => assert_implements_container_queries());
test(() => {
let style = getComputedStyle(c1, "::before");
assert_equals(style.color, "rgb(0, 128, 0)");
assert_equals(style.height, "100px");
}, "::before pseudo element querying style() of originating element");
</script>
<style>
#c2 {
--theme: red;
}
#c2::before { color: red }
#c2.green {
--theme: green;
}
@container style(--theme: green) {
#c2::before {
content: "";
color: green;
}
}
</style>
<div id="c2"></div>
<script>
test(() => {
let style = getComputedStyle(c2, "::before");
assert_equals(style.color, "rgb(255, 0, 0)");
}, "::before pseudo element not matching style()");
test(() => {
c2.className = "green";
let style = getComputedStyle(c2, "::before");
assert_equals(style.color, "rgb(0, 128, 0)");
}, "::before pseudo element matching style() query after class change");
</script>