.video_banner {position:relative;width:100%;overflow:hidden;background-color:#f1f1f1;}
.video_banner div.stage{position:relative;overflow:hidden;}
.video_banner div.video_mask{position:absolute;width:100%;height:100%;left:0px;top:0px;background-image:url(/resource/6/image/2021/04/22/video_banner_mask.png);overflow:hidden;}
.video_banner video{width:100%;}