listbox-group-indent-expected.html | Explore in Territory

<!DOCTYPE html>
<select size=20>
  <optgroup label=group>
    <option>apple</option>
    <option>banana</option>
    <option>durian</option>
  </optgroup>
  <option>cherry</option>
</select>

chromium/third_party/blink/web_tests/fast/forms/select/listbox-group-indent-expected.html