Fullscreen background video and keep it centered

Question

I\'m trying to create a site where I have a background video playing with some HTML5. This is all working perfectly, it works just the way I want it. But I also want to keep

Answer 1

This should make #video the entire size of the viewport and remain there when the user scrolls.

#video {
   position: fixed;
   top: 0;
   right: 0;
   bottom: 0;
   left: 0;
}