.nav {height:40px;background:#59b6df;}
.gnb {list-style:none;padding:0;margin:0;width:990px;}
.gnb li {float:left;position:relative;width:164px;height:40px;text-align:center;color:#fff;font-size:15px;border-right:1px solid #fff;line-height:260%;cursor:pointer;}
.gnb li:hover {background:#f90;}
.gnb .active {background:#f90;}
.gnb li ul {display:none;position:absolute;width:162px;top:40px;left:0;}
.gnb li .sub li {display:block;color:#09f;background:#ffefd8;font-weight:normal!important;}
.gnb li .sub li:hover {color:#f60;text-decoration:none;}
li>ul {top:auto;left:auto;}
li:hover ul, li.over ul {display: block;}