.box-video{position:relative;max-width:1280px;margin:0 auto 20px auto;cursor:pointer;overflow:hidden}.box-video .bg-video{position:absolute;top:0;left:0;width:100%;height:100%;background-repeat:no-repeat;background-position:center;background-size:cover;z-index:2}.box-video .video-container{position:relative;padding-bottom:56.25%;height:0;overflow:hidden}.box-video .video-container iframe{position:absolute;top:0;left:0;width:100%;height:100%}.box-video .bt-play{position:absolute;top:50%;left:50%;margin:-30px 0 0 -30px;display:inline-block;width:60px;height:60px;background:#fff;border-radius:50%;text-indent:-999em;cursor:pointer;z-index:2;-webkit-transition:all .3s ease-out;transition:all .3s ease-out}.box-video .bt-play:after{content:'';position:absolute;left:50%;top:50%;height:0;width:0;margin:-12px 0 0 -6px;border:solid #fff0;border-left-color:#000;border-width:12px 20px;-webkit-transition:all .3s ease-out;transition:all .3s ease-out}.box-video:hover .bt-play{transform:scale(1.1)}.box-video.open .bg-video{visibility:hidden;opacity:0;-webkit-transition:all .6s .8s;transition:all .6s .8s}.box-video.open .video-container{opacity:1;-webkit-transition:all .6s .8s;transition:all .6s .8s}