title: Video background not visible on mobile devices
body: <p>I wanted to know what is the reason that if the PC version with the video background is displayed, but not visible on mobile devices. HELP ME! Please!</p>
  
  <pre><code>&lt;video id="videobcg" preload="auto" autoplay="true" loop="loop" muted="muted" volume="0" &gt;
      &lt;source src="landing-resources/landing/video/video_full_screen.webm" type="video/webm"&gt;
      &lt;source src="landing-resources/landing/video/videofullscreen.ogv" type="video/ogg"&gt;
      &lt;source src="landing-resources/landing/video/videofullscreen.mp4" type="video/mp4"&gt;     
  &lt;/video&gt;
  </code></pre>