.header_class{height:50px;line-height:50px;margin-bottom:12px;background-color:#fff;border-radius:5px;text-align:left;padding-left:20px;cursor:pointer}.pageClass{display:flex;justify-content:center;margin-top:50px}.middle_class{background-color:#fff}.search_about{display:flex;padding:10px 15px;.search_input{margin-left:auto}}