Add Background Video to Webpages with CSS

The YouTube Fan Fest website is a good example of a web page that uses background video to add life to an otherwise boring page. The HTML5 video autoplays in the background in a loop. The video is however hidden when the website is viewed on a mobile device and a static background image is used instead.

Here’s the HTML code:

<body>
  <video id="bgVideo" autoplay loop poster="image.png">
    <!-- Video is embedded in the WEBM format -->
    <source src="video.webm" type="video/webm" />
  </video>
</body>

The site uses CSS media queries to hide the video element on mobile devices (device width < 768 pixels).

<style type=”text/css”>

video#bgVideo {
 position: absolute; // Play the video in full screen mode
 top: 0px;
 left: 0px;
 min-width: 100%;
 min-height: 100%;
 z-index: -1; // Put the video behind all other elements
}

@media only screen and (max-width: 768px) {
 video {
   display:none;
 }
 body{
   background-image:url(“image.png”);
 }
}
</style>

Amit Agarwal is a web geek, solo entrepreneur and loves making things on the Internet. Google recently awarded him the Google Developer Expert and Google Cloud Champion title for his work on Google Workspace and Google Apps Script.

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