class-names-across-iframes-ref.html

<!DOCTYPE html>
<html>
<title>Verifies matching of class names across iframes with/without quirks</title>
<body>
<iframe srcdoc="<!DOCTYPE html><html><head><style>p.Testing{color:green;}</style></head><body><p class='Testing'>text that should be green</p></body></html>");
</script>
</body>
</html>

chromium/third_party/blink/web_tests/external/wpt/quirks/class-names-across-iframes-ref.html