bigscreen/example152/css/menu.css

ul#nav {
    display:block;
    float:left;
    font-family:Trebuchet MS,sans-serif;
    font-size:0;
    padding:5px 5px 5px 0;

    background: -moz-linear-gradient(#f5f5f5, #c4c4c4); /* FF 3.6+ */  
    background: -ms-linear-gradient(#f5f5f5, #c4c4c4); /* IE10 */  
    background: -webkit-gradient(linear, left top, left bottom, color-stop(0%, #f5f5f5), color-stop(100%, #c4c4c4)); /* Safari 4+, Chrome 2+ */  
    background: -webkit-linear-gradient(#f5f5f5, #c4c4c4); /* Safari 5.1+, Chrome 10+ */  
    background: -o-linear-gradient(#f5f5f5, #c4c4c4); /* Opera 11.10 */  
    filter: progid:DXImageTransform.Microsoft.gradient(startColorstr='#f5f5f5', endColorstr='#c4c4c4'); /* IE6 & IE7 */  
    -ms-filter: "progid:DXImageTransform.Microsoft.gradient(startColorstr='#f5f5f5', endColorstr='#c4c4c4')"; /* IE8+ */  
    background: linear-gradient(#f5f5f5, #c4c4c4); /* the standard */ 
}
ul#nav,ul#nav ul {
    list-style:none;
    margin:0;
}
ul#nav,ul#nav .subs {
    background-color:#444;
    border:1px solid #454545;

    border-radius:9px;
    -moz-border-radius:9px;
    -webkit-border-radius:9px;
}
ul#nav .subs {
    background-color:#fff;
    border:2px solid #222;
    display:none;
    float:left;
    left:0;
    padding:0 6px 6px;
    position:absolute;
    top:100%;
    width:300px;

    border-radius:7px;
    -moz-border-radius:7px;
    -webkit-border-radius:7px;
}
ul#nav li:hover>* {
    display:block;
}
ul#nav li:hover {
    position:relative;
}
ul#nav ul .subs {
    left:100%;
    position:absolute;
    top:0;
}
ul#nav ul {
    padding:0 5px 5px;
}
ul#nav .col {
    float:left;
    width:50%;
}
ul#nav li {
    display:block;
    float:left;
    font-size:0;
    white-space:nowrap;
}
ul#nav>li,ul#nav li {
    margin:0 0 0 5px;
}
ul#nav ul>li {
    margin:5px 0 0;
}
ul#nav a:active,ul#nav a:focus {
    outline-style:none;
}
ul#nav a {
    border-style:none;
    border-width:0;
    color:#181818;
    cursor:pointer;
    display:block;
    font-size:13px;
    font-weight:bold;
    padding:8px 18px;
    text-align:left;
    text-decoration:none;
    text-shadow:#fff 0 1px 1px;
    vertical-align:middle;
}
ul#nav ul li {
    float:none;
    margin:6px 0 0;
}
ul#nav ul a {
    background-color:#fff;
    border-color:#efefef;
    border-style:solid;
    border-width:0 0 1px;
    color:#000;
    font-size:11px;
    padding:4px;
    text-align:left;
    text-decoration:none;
    text-shadow:#fff 0 0 0;

    border-radius:0;
    -moz-border-radius:0;
    -webkit-border-radius:0;
}
ul#nav li:hover>a {
    border-style:none;
    color:#fff;
    font-size:13px;
    font-weight:bold;
    text-decoration:none;
    text-shadow:#181818 0 1px 1px;
}
ul#nav img {
    border:none;
    margin-right:8px;
    vertical-align:middle;
}
ul#nav span {
    background-position:right center;
    background-repeat:no-repeat;
    display:block;
    overflow:visible;
    padding-right:0;
}
ul#nav ul span {
    background-image:url("../images/arrow.png");
    padding-right:20px;
}
ul#nav ul li:hover>a {
    border-color:#444;
    border-style:solid;
    color:#444;
    font-size:11px;
    text-decoration:none;
    text-shadow:#fff 0 0 0;
}
ul#nav > li >a {
    background-color:transpa;
    height:25px;
    line-height:25px;

    border-radius:11px;
    -moz-border-radius:11px;
    -webkit-border-radius:11px;
}
ul#nav > li:hover > a {
    background-color:#313638;
    line-height:25px;
}