         &nbsp;
            <label>
              Enable Doc:
              <input type="checkbox" id="enable_doc">
            </label>
            <br>
            <label>
              Enable transition events:
              <input type="checkbox" id="enable_hc_events" checked>
            </label>
          </td>
        </tr>
      </tbody>
    </table>
    <span class="hint">Try enabling and disabling containers with &amp; without
      state transition events, and compare performance!</span>
  </fiel