For a real full-screen solution, this can be achieved as follows:
HTML
<div class="video-background"> <div class="video-foreground"> <iframe src="https://www.youtube.com/embed/I4agXcHLySs?controls=0&showinfo=0&rel=0&autoplay=1&loop=1&mute=1" frameborder="0" allowfullscreen></iframe> </div> </div>
CSS
* { box-sizing: border-box; } .video-background { background: #000; position: fixed; top: 0; right: 0; bottom: 0; left: 0; z-index: -99; } .video-foreground, .video-background iframe { position: absolute; top: 0; left: 0; width: 100%; height: 100%; pointer-events: none; } @media (min-aspect-ratio: 16/9) { .video-foreground { height: 300%; top: -100%; } } @media (max-aspect-ratio: 16/9) { .video-foreground { width: 300%; left: -100%; } } @media all and (max-width: 600px) { .vid-info { width: 50%; padding: .5rem; } .vid-info h1 { margin-bottom: .2rem; } } @media all and (max-width: 500px) { .vid-info .acronym { display: none; } }
This is not ideal, for example. it does not work with extremum coefficients in the container, but it works for most situations. Here is a working example: https://codepen.io/anon/pen/zRVLGJ
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