title: HTML5 video tag - how to set cover background size
body: <p>I am trying the video tag of HTML5 and want to give background size cover property to it. It is not taking that property. I had given <code>width: 100%</code> and <code>height: 100%</code>, also the video go outside container.</p>
  
  <p>How I can achieve it ?</p>