-time-display showduration></media-time-display>
          <media-time-range></media-time-range>
          <media-mute-button></media-mute-button>
          <media-playback-rate-menu-button></media-playback-rate-menu-button>
          <media-pip-button></media-pip-button>
          <media-fullscreen-button></media-fullscreen-button>
        </media-control-bar>
      </media-controller>

      <br>

      <h2>Row layout w/ header</h2>

      <media-controller id="mc">
        <video
          id="video"
   