<gw-check-listbox>
  <fieldset>
    <legend>Fruit</legend>
    <label><input type="checkbox">Apple</label>
    <label><input type="checkbox">Apricot</label>
    <label><input type="checkbox">Avocado</label>
    <label><input type="checkbox">Blueberry</label>
    <label><input type="checkbox">Cherry</label>
    <label><input type="checkbox">Cranberry</label>
    <label><input type="checkbox">Orange</label>
  </fieldset>
</gw-check-listbox>