.header_placeholder{height:112px;position:relative;z-index:2}#header,#header .nav li{position:relative}#header .center{height:112px}#header .close_menu_btn,#header .open_menu_btn{display:block;font-size:30px;line-height:112px;padding-left:48px}#header .logo{position:relative;background:url(./images/logo_p.png) no-repeat center center;width:100%;height:100%;color:#78787d}#header .nav,#header.fixed{background-color:#fff;position:fixed;top:0;left:0}#header .nav{bottom:0;width:0;overflow:hidden;color:#2c2b2c;-webkit-transition:all .2s ease-out;transition:all .2s ease-out}#header .nav.show{width:520px}#header .nav .close_menu_btn{position:absolute;left:0;top:0}#header .nav ul{width:354px;margin:55px 50px 0 116px;font-size:32px;line-height:1.4;overflow:hidden}#header .nav li{margin-top:100px}#header .nav li span{display:inline-block;width:100%}#header .nav .sub_menu,#header .nav li i{-webkit-transition:all .2s ease-out;transition:all .2s ease-out}#header .nav li i{position:absolute;right:0;top:0;line-height:44px;font-size:44px}#header .nav li.show_sub .sub_menu{max-height:480px}#header .nav li.show_sub i{-webkit-transform:rotateX(180deg);transform:rotateX(180deg)}#header .nav .sub_menu{font-size:26px;line-height:1.423;max-height:0;overflow:hidden}#header .nav .sub_menu .pt20{padding-top:20px}#header .nav .sub_menu a{margin-top:40px;display:block;color:#92969e}#header.white .logo{color:#fff;background-image:url(./images/logo_white_p.png)}#header.fixed{right:0}#header.fixed .logo{color:#78787d;background-image:url(./images/logo_p.png)}