nav {
    width: 100%;
}
nav ul:after {
    clear: both;
    content: " ";
    display: block;
    font-size: 0;
    height: 0;
    visibility: hidden;
}
    nav ul,nav ul li{
    background-color: #999999;
}
    nav ul li:hover > ul {
    visibility: visible;
}
nav ul li ul{
    display: block;
    visibility: hidden;
    position: absolute;
    padding:0px;
}
nav ul li ul li{
    float: none;
}

nav ul {
    padding: 0px;
    margin: 0px;

}
nav ul li {
list-style: none;
    float:left;
    border-right: 1px solid #dfdfdf;
}
nav ul li a {
    text-decoration: none;
    display: block;
    color: #333;
    padding: 5px 20px 5px 20px;
 
    transition: background 0.3s ease-out; /* explorer 10 */
    -webkit-transition: background 0.3s ease-out; /* chrome & safari */
    -moz-transition: background 0.3 ease-out; /* firefox */
    -o-transition: background 0.3 ease-out; /* opera */
}
nav ul li.cat1:hover a, nav ul li.cat1:hover > ul li a  {
    background-color: #ffff0;
}
nav ul li.cat2:hover a, nav ul li.cat2:hover > ul li a  {
    background-color: #F9D56E;
}
nav ul li.cat3:hover a, nav ul li.cat3:hover > ul li a {
    background-color: #095EBF;
}
nav ul li.cat4:hover a, nav ul li.cat4:hover > ul li a {
    background-color: #7ebea5;
}
nav ul li.cat5:hover a, nav ul li.cat5:hover > ul li a {
    background-color: #BABEBF;
}
nav ul li.cat6:hover a, nav ul li.cat6:hover > ul li a {
    background-color: #FA485E;
}
nav ul li:hover > a {
    color: #FAFAFA;
}
nav ul li ul li a {
    color: #FAFAFA;
}
nav ul li ul li a:hover{
    color: #333;
    background-color: #FAFAFA !important;
}