chromium/third_party/blink/web_tests/external/wpt/css/css-counter-styles/counter-style-at-rule/system-extends-invalid-ref.html

<!DOCTYPE html>
<meta charset="UTF-8">
<title>CSS Reference: symbols function, invalid</title>
<link rel="author" title="Xidorn Quan" href="https://www.upsuper.org/">
<link rel="stylesheet" href="support/test-common.css">
<link rel="stylesheet" href="support/ref-common.css">
<style type="text/css">
  ol {
    list-style: decimal inside;
  }
</style>
<div>a1b</div>
<div>2b</div>
<div>c3.&nbsp;</div>
<div>d4.&nbsp;</div>
<div>e5.&nbsp;</div>
<ol start="6">
  <li>foo<li>bar
</ol>