#useful-content-page{max-width:1360px;min-width:1096px;margin:0 auto;display:flex;background:#fff;padding:30px 68px;width:90%}#useful-content-page .useful-content-lt{flex:2;margin:0 auto;margin-top:-10px;box-shadow:0 1px 3px 0 rgba(0,0,0,.08),0 4px 8px 0 rgba(0,0,0,.08)}#useful-content-page .useful-content-lt-title{font-size:16px;font-weight:500;color:#4d4a4a;line-height:26px;height:26px;margin-bottom:8px;overflow:hidden;text-align:center;margin-top:10px}#useful-content-page .class-video-content-box{margin:0 auto}#useful-content-page .class-video-content{width:100%;height:490px;min-height:350px;max-height:520px;background:#000;cursor:pointer}#useful-content-page .comment-list-clear-pos{text-align:left}#useful-content-page .useful-content-rgt{width:320px;flex:none;color:#2f3238;margin-left:30px;margin-top:-10px;height:315px}#useful-content-page .useful-content-rgt-main{background:#f4f4f4;padding:12px 0 0 12px;position:fixed;border-radius:4px;width:320px}#useful-content-page .ucrm-content{height:240px;overflow-y:scroll;font-size:14px}#useful-content-page .ucrm-content-ul{padding:5px 0;color:#444343}#useful-content-page .ucrm-content-li{display:flex;height:35px;line-height:35px;cursor:pointer}#useful-content-page .ucrm-content-li-desc{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}#useful-content-page .ucrm-content-li-desc:hover,#useful-content-page .ucrmcld-act{color:#1f0b66}#useful-content-page .ucrm-content-li-time{color:#7d7c7c}#useful-content-page .play-gif{width:15px;height:15px;margin-top:10px;margin-right:2px}#useful-content-page .play-gif-span{width:17px}#useful-content-page .ucrm-title{height:50px;line-height:38px;font-size:16px;overflow:hidden;border-bottom:1px solid #d9d6d6;margin-right:18px;color:#000;font-weight:500}#useful-content-page .ucrm-more{cursor:pointer;font-size:12px;color:#0f067b;text-align:center}