.course_video_box{position:relative;cursor:pointer}.course_video_mask{position:absolute;z-index:10;background:rgba(0,0,0,.4);transition:300ms}.course_video_mask >p{position:relative;width:100%;text-align:center;margin-bottom:0;font-size:25px;color:#fff}.course_video_mask >p.course_video_text{left:0;top:50%;margin-top:-30px;height:60px;line-height:60px}.course_video_mask >p.course_video_move{width:75%;height:80%;border:2px solid #fff;left:10%;transform:scale(0);transition:300ms}.course_video_mask.active{background:rgba(0,0,0,.1)}.course_video_mask.active .course_video_move{transform:scale(1)}.course_video_mask.deactive{background:rgba(0,0,0,.4)}.course_video_mask.deactive .course_video_move{transform:scale(0)}#course_video{width:auto;height:80%;max-width:none;z-index:1000000}#course_video .md-content{background:#222;position:relative;height:100%}#course_video .md-content video{height:100%;background:rgba(0,0,0,.8)}#course_video .md-content .md-close{position:absolute;z-index:10;font-size:20px;right:-20px;top:-20px;cursor:pointer;color:#ff7f27}#course_video_overlay{background:rgba(0,0,0,.8);z-index:100000}