.video-top img{width:100%}.video-link{display:inline-block;font-size:.8em;width:30px;height:30px;line-height:35px;text-align:center;background-color:#e6e6e6;border-radius:50%;margin-left:10px}.video-sort{color:#999;font-size:.75em;margin-bottom:5px}.video-name{color:#000;display:inline-block;font-size:1.25em;font-weight:normal}.video-name .presource{display:inline;color:#666;font-size:14px}.video-text{font-size:.875em}.video-text p{margin-bottom:20px}.video-text h2{font-weight:normal;font-size:1rem;color:#000;margin:40px 0 10px}.video-video{position:relative;padding-bottom:56.25%;margin:50px 0}.video-video iframe{position:absolute;top:0;width:100%;height:100%}.video-line{width:100%;height:1px;background-color:#e6e6e6;margin-bottom:50px}.video-back{text-align:center;margin:50px 0}.video-back a{position:relative;font-size:.875em;color:#000;padding-bottom:10px}.video-back a:before{content:"";position:absolute;bottom:0;right:0;height:5px;width:100%;background:#ccc;transition:width .6s}.video-back a:after{content:"";position:absolute;bottom:0;right:0;height:5px;width:0;background:#666;transition:width .6s}.video-back a:hover:after{width:100%}@media screen and (max-width: 1100px){.video-back a:after{width:100%}.video-video{margin:30px 0}.video-line{margin-bottom:30px}}@media screen and (max-width: 640px){.inner{margin:100px 8vw}.video-name{font-size:1.2em}}