File: parse-is.html

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<!DOCTYPE html>
<meta charset="utf-8">
<title>CSS Selectors: The Matches-Any Pseudo-class: ':is()'</title>
<link rel="help" href="https://drafts.csswg.org/selectors/#matches">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="/css/support/parsing-testcommon.js"></script>
<script>
  test_valid_selector(':is(ul,ol,.list) > [hidden]',
      ':is(ul, ol, .list) > [hidden]');
  test_valid_selector(':is(:hover,:focus)',
      ':is(:hover, :focus)');
  test_valid_selector('a:is(:not(:hover))');

  test_valid_selector(':is(#a)');
  test_valid_selector('.a.b ~ :is(.c.d ~ .e.f)');
  test_valid_selector('.a.b ~ .c.d:is(span.e + .f, .g.h > .i.j .k)');
</script>