.banner{width:100%;height:326px;background:url(../images/forum/banner.png) center no-repeat;background-size:cover;animation:2s scaleIn cubic-bezier(.215,.61,.355,1) 1;position:relative}.forum-box{padding-top:56px;padding-bottom:0}.forum-box .video-box{width:1200px;margin:16px auto 0}.forum-box .video-box video{width:1200px;cursor:pointer;display:block;background:#000}.forum-box .video-box .txt{font-weight:400;font-size:20px;color:#3d3d3d;line-height:32px;padding:16px 0 44px 0}.forum-box-expand{padding-bottom:0}.forum-footer{margin-top:46px}