custom-highlight-container-metrics-002-ref.html

<!DOCTYPE html>
<meta charset="UTF-8">
<title>CSS Highlight API Test Reference</title>
<head>
  <style>
    .wrapper {
      width: 200px;
      height: 100px;
      text-underline-offset: 4px;
      text-decoration-line: underline;
      text-decoration-color: green;
      text-decoration-thickness: 4px;
    }
    #h2 {
      text-underline-offset: 2svw;
      text-decoration-line: underline;
      text-decoration-color: green;
      text-decoration-thickness: 4svh;
    }
  </style>
</head>
<body>
  <div class="wrapper">With container size</div>
  <div id="h2">Without container size</div>
</body>

chromium/third_party/blink/web_tests/external/wpt/css/css-highlight-api/painting/custom-highlight-container-metrics-002-ref.html