.clearfix:after{content:"";display:block;height:0;clear:both;visibility:hidden}#patent{width:100%;border-top:2px solid #e2211c}#patent .patent_box{width:1200px;margin:0 auto}#patent .patent_box .patent_class{width:100%;background:#fff;height:40px;margin-top:21px}#patent .patent_box .patent_class .patent_class_span{font-size:14px;font-family:Microsoft YaHei;padding-left:9px;font-weight:400;color:#666}#patent .patent_box .patent_class button{margin-left:40px;color:#333}#patent .patent_box .patent_class .btn_active,#patent .patent_box .patent_class button:hover{color:#e2211c}#patent .patent_box .patent_list{margin-top:20px;width:100%;padding-bottom:60px;min-height:500px}#patent .patent_box .patent_list .item{width:225px;height:320px;background:#fff;float:left;margin-bottom:15px;padding-left:5px;margin-right:10px}#patent .patent_box .patent_list .item .item_img{width:200px;height:200px;margin:0 auto;padding-top:15px}#patent .patent_box .patent_list .item .item_title{height:48px;padding:0 15px;border-bottom:1px solid #ddd;line-height:48px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;cursor:pointer}#patent .patent_box .patent_list .item .item_title:hover{color:#e2211c}#patent .patent_box .patent_list .item .item_patent{font-size:16px;font-family:Source Han Sans CN;font-weight:400;color:#e2211c;text-align:center;margin-top:15px}