File: style-query-document-element.html

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<!DOCTYPE html>
<title>CSS Container Queries Test: style query against document element</title>
<link rel="help" href="https://drafts.csswg.org/css-conditional-5/#container-queries">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="support/cq-testcommon.js"></script>
<style>
  html {
    --foo: bar;
  }
  @container style(--foo: bar) {
     body { color: green; }
  }
</style>
<body id="body">
<script>
  test(() => {
    assert_equals(getComputedStyle(body).color, "rgb(0, 128, 0)");
  }, "style query should evaluate to true");
</script>