27 lines
953 B
HTML
27 lines
953 B
HTML
<!DOCTYPE html>
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<meta charset="utf-8">
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<title>CSS Position Test: ::backdrop is tree abiding, allowed after ::slotted</title>
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<link rel="help" href="https://drafts.csswg.org/css-position-4/#backdrop">
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<link rel="help" href="https://drafts.csswg.org/css-pseudo-4/#tree-abiding">
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<link rel="help" href="https://drafts.csswg.org/css-scoping/#slotted-pseudo">
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<div>
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<template shadowrootmode="open">
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<style>
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::slotted(dialog)::backdrop {
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background-color: green;
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}
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</style>
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<slot></slot>
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</template>
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<dialog id="target"></dialog>
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</div>
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<script>
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const target = document.getElementById("target");
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target.showModal();
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test(() => {
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assert_equals(getComputedStyle(target, "::backdrop").backgroundColor, "rgb(0, 128, 0)");
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}, "::backdrop is tree-abiding and should be allowed after ::slotted()");
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</script>
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