opdown">
          <core-menu class="menu">
            <template repeat="{{pastries}}">
              <paper-item>{{}}</paper-item>
            </template>
          </core-menu>
        </paper-dropdown>
      </paper-menu-button>

    </section>

    <section>

      <div>Layered menu buttons</div>

      <button onclick="document.getElementById('collapse').toggle()">toggle core-collapse</button>

      <br>

      <core-collapse id="collapse">

        <paper-menu-button>
          <paper-icon-button ic