#video_background {
 position: absolute;
 bottom: 0px;
 right: 0px;
 min-width: 100%;
 min-height: 100%;
 width: auto;
 height: auto;
 z-index: -1000;
 overflow: hidden;
 }
 #video_pattern {
 background:#fff;
 position: fixed;
 opacity: 0.8;
 left: 0px;
 top: 0px;
 width: 100%;
 height: 100%;
 z-index: 1;
 }