chromium/third_party/blink/web_tests/external/wpt/css/selectors/invalidation/nth-child-in-shadow-root-ref.html

<!doctype html>
<meta charset=utf-8>
<title>CSS Test Reference</title>
<div>
  <div style="color: green">Should be green</div>
  <div style="color: red">Should be red</div>
</div>