.dropdown { height: 300px;float:left; }
.dropdown dt { width:100px; padding:0px; cursor:pointer; }
.dropdown dt:hover {}
.dropdown dd { position:absolute; overflow:hidden; width:190px; display:none; z-index:200; opacity:0 }
.dropdown ul { width:190px; list-style:none; }
.dropdown li { display:inline; background: #3598ba; width: 160px; }
.dropdown a, .dropdown a:active, .dropdown a:visited { display:block; color:#ffffff; text-decoration:none; width:160px }
.dropdown a .main, .dropdown a .main:active, .dropdown a .main;visited { color: #3598ba; }
.dropdown a:hover { background:#3598ba; color:#fff }
.dropdown a.underline { width: 160px; display:inline }