.help-center{width:1278px;min-height:800px;display:-webkit-box;display:-ms-flexbox;display:flex;-webkit-box-pack:justify;-ms-flex-pack:justify;justify-content:space-between;margin:20px auto;border:1px solid #eaeaea}.help-center .left{width:264px;min-height:800px;border-right:1px solid #eaeaea}.help-center .left ul{width:100%;min-height:800px}.help-center .left ul li{width:100%;height:50px;line-height:50px;cursor:pointer;padding-left:28px;font-size:18px;position:relative;overflow:hidden;text-overflow:ellipsis;-o-text-overflow:ellipsis;-webkit-text-overflow:ellipsis;-moz-text-overflow:ellipsis;white-space:nowrap}.help-center .left ul li img{display:none}.help-center .left ul li .circle{width:10px;height:10px;border-radius:100%;background:transparent;position:absolute;top:21px;left:10px}.help-center .left ul span{display:inline-block}.help-center .left ul .active{color:#dd3a41}.help-center .left ul .active .circle{background:#dd3a41}.help-center .left ul .active img{position:absolute;right:-12px;top:19px;display:block}.help-center .left ul .text-overflow{max-width:240px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.help-center .right{width:984px;min-height:800px}.help-center .right iframe{width:100%;height:100%;border:none}