배경 video 전체 화면 크기 적용

<style type="text/css">
    video#bgvid {
            position: fixed; right: 0; bottom: 0;
            min-width: 100%; min-height: 100%;
            width: auto; height: auto; z-index: -100;
            background: url(polina.jpg) no-repeat;
            background-size: cover;
    }
 
</style>
 
 
<video autoplay loop  id="bgvid">
    <source src="hdvideo.mp4" type="video/mp4">
</video>