.dropdown {float:left;}
.dropdown dt {cursor:pointer;}
.dropdown dd {margin:0 40px 0 0; position:absolute; overflow:hidden; display:none; background:#fff; z-index:200; opacity:0}
.dropdown ul {padding:0; margin:0; border:1px solid #9ac1c9; list-style:none; border-top:none}
.dropdown li {display:inline}
.dropdown a, .dropdown a:active, .dropdown a:visited {display:block; padding:5px; color:#333; text-decoration:none; background:#eaf0f2; width:194px}
.dropdown a:hover {background:#d9e1e4; color:#000}
.dropdown .underline {border-bottom:1px solid #b9d6dc}
.mainnav {margin:0;padding:0;border:none;}