Embedded video

// Insert into <body> this should be the first line after <body>, basically as soon as you reach <body> put this in before anything else.

<div style="position: fixed; z-index: -99; width: 100%; height: 100%">
  <iframe frameborder="0" height="100%" width="100%"
    src="https://youtube.com/embed/z9Ul9ccDOqE?version=3&autoplay=1&loop=1&controls=0&showinfo=0&autohide=1">
  </iframe>
</div>

// Add the code above to: the first line of <body>