.platform-list{width:1200px;margin:0 auto 20px;padding:30px 20px;background-color:#fff}.platform-list .resouce-list{width:100%;font-size:16px;color:#242424}.platform-list .resouce-list li{float:left;width:25%;margin-bottom:40px;padding:0 10px}.platform-list .resouce-list li div{height:150px;margin-bottom:16px;background-color:#f5f5f5;background-size:100%}.platform-list .resouce-list li div .play-cover{display:none;position:relative;background-color:rgba(0,0,0,.3)}.platform-list .resouce-list li div .play-cover .icon-play{position:absolute;left:50%;top:50%;width:60px;height:60px;margin-top:-30px;margin-left:-30px;background-size:100%}.platform-list .resouce-list li div:hover .play-cover{display:block}.platform-list .resouce-list li h3{padding:0 16px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.platform-list .pager{height:80px;line-height:80px;background-color:#fff}