#main_div{width:400px;margin:auto;height:auto;padding:0}.menu_list{width:220px}.menu_head{padding:0;cursor:pointer;margin:0;width:220px;height:51px}.menu_body{display:none;width:205px;margin-left:13px;border-left:#c4c4c4 solid 1px;border-right:#c4c4c4 solid 1px;background:#fff;float:left}.menu_body ul{margin:auto;padding:0;width:185px}.menu_body ul li{margin:0;padding:0;list-style:none;float:left}.menu_body ul li a{background:#fff;display:block;width:185px;margin:0;color:#404041;padding:10px 0;border-bottom:#e5e5e5 solid 1px;font-weight:700;text-decoration:none;font-family:Arial,Helvetica,sans-serif;font-size:12px;float:left;font-weight:normal}.menu_body ul li a:hover{color:#00aeef;text-decoration:none;float:left;margin:0}