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<!doctype html>
<title>Container Relative Units: cqi, cqb, etc</title>
<link rel="help" href="https://drafts.csswg.org/css-contain-3/#container-lengths">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="support/cq-testcommon.js"></script>
<style>
.inline { container-type: inline-size; }
.size { container-type: size; }
.inline.outer { width: 500px; }
.size.outer { height: 400px; }
.inline.inner { width: 300px; }
</style>
<div id=ref></div>
<div class="inline outer">
<div class="size outer">
<div class="inline inner">
<div id=child>Test</div>
</div>
</div>
</div>
<script>
setup(() => assert_implements_container_queries());
function assert_unit_equals(element, actual, expected) {
try {
element.style.padding = actual;
ref.style.padding = expected;
assert_equals(getComputedStyle(element).paddingLeft,
getComputedStyle(ref).paddingLeft);
} finally {
element.style = '';
ref.style = '';
}
}
test(function() {
assert_unit_equals(child, '0cqi', '0px');
assert_unit_equals(child, '1cqi', '3px');
assert_unit_equals(child, '10cqi', '30px');
assert_unit_equals(child, '10cqw', '30px');
assert_unit_equals(child, '10cqb', '40px');
assert_unit_equals(child, '10cqh', '40px');
assert_unit_equals(child, '10cqmin', '30px');
assert_unit_equals(child, '10cqmax', '40px');
}, 'Container relative units');
test(function() {
assert_unit_equals(child, '10cqi', '30px');
assert_unit_equals(child, '10cqb', '40px');
assert_unit_equals(child, 'calc(10cqi + 10cqb)', '70px');
assert_unit_equals(child, 'max(10cqi, 10cqb)', '40px');
}, 'Container relative units in math functions');
</script>
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