<div class="fixed" data-immerser>
  <div data-immerser-mask>
    <div data-immerser-mask-inner>
      <!-- <%= getTranslation('your-markup') %> -->
    </div>
  </div>
  <div data-immerser-mask>
    <div data-immerser-mask-inner>
      <!-- <%= getTranslation('your-markup') %> -->
    </div>
  </div>
</div>