#mobi_menu{width:100%;position:fixed;z-index:1000}nav:not(.mm-menu){display:none}.header,.content,.footer{text-align:left}.header,.footer{font-size:16px;font-weight:700;color:#fff;line-height:40px;-moz-box-sizing:border-box;box-sizing:border-box;width:100%;height:40px;padding:0 50px}.header.fixed{position:fixed;top:0;left:0}.footer.fixed{position:fixed;bottom:0;left:0}.header a{background:center center no-repeat transparent;background-image:url(//kaisaiyu.com/wp/wp-content/themes/kaisaiyu/js/mm/sp_menu_bt.png);background-size:40px;display:block;width:40px;height:40px;position:absolute;top:-45px;right:10px}.content{padding:150px 50px 50px}