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Test Info:
- This WPT test may be referenced by the following Test IDs:
- /css/css-conditional/container-queries/display-contents.html - WPT Dashboard Interop Dashboard
<!doctype html>
<title>@container and display:contents</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="support/cq-testcommon.js"></script>
<script>
setup(() => assert_implements_size_container_queries());
</script>
<style>
.container {
container-type: inline-size;
width: 30px;
height: 30px;
background: tomato;
}
.big {
width: 50px;
height: 50px;
background: skyblue;
}
.contents {
display: contents;
}
@container (width: 30px) {
.target { --x:30; }
}
@container (width: 50px) {
.target { --x:50; }
}
main {
display: flex;
flex-wrap: wrap;
}
</style>
<main>
<!-- Container is display:contents -->
<div class="container contents">
<div>
<div class="target" id=target1></div>
</div>
</div>
<script>
test(function() {
let s = getComputedStyle(target1);
assert_equals(s.getPropertyValue('--x'), '');
}, 'getComputedStyle when container is display:contents');
</script>
<!-- Container becomes display:contents -->
<div id=container2 class="container">
<div>
<div class="target" id=target2></div>
</div>
</div>
<script>
test(function() {
let s = getComputedStyle(target2);
assert_equals(s.getPropertyValue('--x'), '30');
container2.classList.add('contents');
assert_equals(s.getPropertyValue('--x'), '');
container2.classList.remove('contents');
assert_equals(s.getPropertyValue('--x'), '30');
}, 'getComputedStyle when container becomes display:contents');
</script>
<!-- Intermediate container becomes display:contents -->
<div class="container">
<div>
<div id=container3 class="container">
<div>
<div class="target" id=target3></div>
</div>
</div>
</div>
</div>
<script>
test(function() {
let s = getComputedStyle(target3);
assert_equals(s.getPropertyValue('--x'), '30');
container3.classList.add('contents');
assert_equals(s.getPropertyValue('--x'), '');
container3.classList.remove('contents');
assert_equals(s.getPropertyValue('--x'), '30');
}, 'getComputedStyle when intermediate container becomes display:contents');
</script>
</main>