.nav_top{height:50px;background:#fff;line-height:50px;font-size:15px;padding:0 16px;color:#333;margin-bottom:20px}.mainContent{padding:20px;height:calc(100vh - 228px);background:#fff;position:relative}.closeCar{height:100px;line-height:100px;overflow:hidden;font-size:15px;border-bottom:1px solid #f0f0f0}.closeCar span{display:inline-block;width:100px}.footerBtnqqq{border-top:1px solid #dedede;padding-top:20px;text-align:center;position:absolute;bottom:20px;left:0;right:0}.footerBtnqqq button{width:200px}