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Test Info:
- This WPT test may be referenced by the following Test IDs:
- /css/css-conditional/container-queries/scroll-state/scroll-state-snapped-both.html - WPT Dashboard Interop Dashboard
<!DOCTYPE html>
<title>@container: scroll-state(snapped: both) matching</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/css/css-conditional/container-queries/support/cq-testcommon.js"></script>
<script src="/css/css-transitions/support/helper.js"></script>
<style>
:root {
scroll-snap-type: both mandatory;
}
body {
margin: 0;
}
#filler {
width: 10000px;
height: 10000px;
}
#snapped {
margin-top: 200px;
margin-left: 200px;
width: 100px;
height: 100px;
container-type: scroll-state;
scroll-snap-align: start;
background: teal;
}
@container scroll-state(snapped: both) {
#target { --snapped: yes }
}
</style>
<div id="snapped">
<span id="target">My container is snapped</span>
</div>
<div id="filler"></div>
<script>
setup(() => assert_implements_scroll_state_container_queries());
promise_test(async t => {
await waitForAnimationFrames(2);
assert_equals(getComputedStyle(target).getPropertyValue("--snapped"), "yes");
assert_equals(document.documentElement.scrollTop, 200);
assert_equals(document.documentElement.scrollLeft, 200);
}, "Check that scroll-state(snapped: block) matches");
</script>