![html](https://habrastorage.org/r/w120/webt/5a/6c/29/5a6c29308ac8a661581550.png)
HTML
10
Вклад в тег
<video autoplay loop>
<source src="video/video2.mp4" type="video/mp4">
<source src="video/video1.webm" type="video/webm">
<source src="video/video3.ogv" type="video/ogg"/>
</video>
video{
position:fixed;
z-index:-1;
min-width:100%;
min-height:100%;
overflow:hidden;
}