="play" mediacontroller="controller">
        <div slot="play"></div>
        <div slot="pause"></div>
      </media-play-button>
      <media-play-button class="pause" mediacontroller="controller">
        <div slot="play"></div>
        <div slot="pause"></div>
      </media-play-button>
      <media-play-button class="stop" mediacontroller="controller">
        <div slot="play"></div>
        <div slot="pause"></div>
      </media-play-button>
      <media-seek-forward-button mediacontroller="controller"