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Test Info:
- This WPT test may be referenced by the following Test IDs:
- /css/css-contain/container-queries/container-size-invalidation-after-load.html - WPT Dashboard Interop Dashboard
<!DOCTYPE html>
<title>@container: invalidation of container size after load event</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="support/cq-testcommon.js"></script>
<style>
#container {
container-type: size;
width: 200px;
height: 4em;
border: 1px solid black;
}
@container (width > 300px) {
#child { color: green; }
}
</style>
<div id=container>
<div id=child>
Green
</div>
</div>
<script>
setup(() => assert_implements_container_queries());
function waitForLoad(w) {
return new Promise(resolve => w.addEventListener('load', resolve));
}
promise_test(async () => {
await waitForLoad(window);
container.offsetTop;
container.style.width = '400px';
container.style.setProperty('--x', 'x'); // crbug.com/1321010
assert_equals(getComputedStyle(child).color, 'rgb(0, 128, 0)');
});
</script>