style-query-unset-on-root.html

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This WPT test may be referenced by the following Test IDs:
- /css/css-conditional/container-queries/style-query-unset-on-root.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<title>CSS Container Queries Test: query unset style for custom property on :root should always match</title>

<link rel="help" href="https://drafts.csswg.org/css-conditional-5/#style-container">

<script src="/resources/testharness.js"></script>

<script src="/resources/testharnessreport.js"></script>

<script src="support/cq-testcommon.js"></script>

<style>

  :root { container-name: --root; }

  @container --root style(--foo: unset) {

    #target { color: green; }

</style>

<div id="target"></div>

<script>

  setup(() => assert_implements_style_container_queries());

  test(() => {

    assert_equals(getComputedStyle(target).color, "rgb(0, 128, 0)");

  }, "Match style(--foo: unset) on :root element");

</script>