.menu_list{margin:80px auto; width:90%; }
.menu_head{width:100%; height:10rem; line-height:5rem; font-size:4rem; cursor:pointer; border-bottom:1px solid #333; position:relative; font-weight:400; margin:0; max-height:100px; margin-top:110px;}
.menu_body{width:100%; height:auto; overflow:hidden; line-height:5rem; font-size:3rem; max-height:1500px; margin-top:15px;}
.menu_body a{display:block; width:100%; line-height:5rem; font-size:3rem; background:#fff;text-decoration:none;}
.menu_body a:hover{text-decoration:none;}