| <!DOCTYPE html> | |
| <script src="resources/polyfill.js"></script> | |
| <p>When the AuthorShadowDOM has only a shadow element, this should be rendered like no Shadow DOM is added.</p> | |
| <form> | |
| <select id="host"> | |
| <option disabled>Please select</option> | |
| <optgroup label="Rank 1"></optgroup> | |
| <option value="hoge" selected>hoge</option> | |
| </select> | |
| <input id="submit" type="submit" value="Submit"> | |
| </form> |