.video-background {
    width: 100%;
    height: 100%;
    position: absolute;
    left: 0;
    top: 0;
    z-index: -200;
    /*background: url('assets/videos/file.mp4') no-repeat center center fixed;*/
    /*background-size: cover;*/
}
@media only screen and (min-width: 768px) {
  .video-background {
    background: none;
  }
  .video-background video {
    position: absolute;
    z-index: -1;
    width: 100%;
    height: 100%;
  }
}