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33 lines
987 B
HTML
33 lines
987 B
HTML
<!doctype html>
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<title>CSS Container Queries Test: Top layer element as a @container</title>
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<link rel="help" href="https://drafts.csswg.org/css-contain-3/#container-queries">
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<script src="support/cq-testcommon.js"></script>
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<style>
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#parent { width: 100px; }
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#dialog {
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container-type: inline-size;
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width: auto;
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border: none;
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}
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#child { color: red; }
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@container (min-width: 200px) {
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#child { color: green; }
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}
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</style>
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<div id="parent">
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<dialog id="dialog"><span id="child"></span></dialog>
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</div>
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<script>
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setup(() => assert_implements_container_queries());
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test(() => {
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assert_equals(getComputedStyle(child).color, "rgb(255, 0, 0)");
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}, "#dialog initially sized by #containing-block");
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test(() => {
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dialog.showModal();
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assert_equals(getComputedStyle(child).color, "rgb(0, 128, 0)");
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}, "#dialog sized by viewport");
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</script>
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