chromium/third_party/blink/web_tests/fast/forms/select/listbox-line-height.html

<select multiple style="line-height: 28px">
    <option>uno</option>
    <optgroup label="two">
        <option>dos</option>
    </optgroup>
    <option>tres</option>
    <option>cuatro</option>
    <option>cinco</option>
</select>