custom-highlight-dynamic-container-metrics-001-ref.html

<!DOCTYPE html>
<meta charset="UTF-8">
<title>CSS Highlight API Test: Reference</title>
<head>
  <style>
    iframe {
      width: 400px;
      height: 200px;
    }
</style>
</head>
<iframe id="iframe" src="resources/iframe-container.html"></iframe>
</html>

chromium/third_party/blink/web_tests/external/wpt/css/css-highlight-api/painting/custom-highlight-dynamic-container-metrics-001-ref.html