.info_wrow { margin: 50px auto; .left_btn{ width: 200px; border: 14px solid #dfdfdf; float: left; background: white; padding-bottom: 300px; } .left_btn .btn{ width: 200px; height: 70px; line-height: 70px; font-size: 18px; color: #333333; text-align: center; background: #f5f5f5; margin-bottom: 5px; } .left_btn .btnon{ color: white; background: #d84848; } .btn_list div{ width: 200px; height: 30px; line-height: 30px; text-align: center; font-size: 16px; color: #333333; margin: 10px auto; } .btn_list div span{ margin: auto 10px; display: inline-block; vertical-align: middle; } .btn_list .on{ color: #d84848; } .btn_list { display: none; } .right_info{ width: 890px; border: 14px solid #dfdfdf; float: right; padding: 20px; } .right_info .info_list{ display: none; } }