div>

      <!-- Card containing the signed-in UI -->
      <div id="demo-signed-in-card" class="mdl-card mdl-shadow--2dp mdl-cell">
        <div class="mdl-card__supporting-text mdl-color-text--grey-600">
          <p>
            Welcome <span id="demo-name-container"></span><br>
            Your Firebase User ID is: <span id="demo-uid-container"></span><br>
            Your profile picture: <img id="demo-profile-pic">
          </p>
          <button id="demo-sign-out-button" class="mdl-color-text--grey-