Dúvida - Criar itens de menus

ul.nav-menu
{  
    list-style-type: none;
margin-left:205px;
margin-top:21px;
padding:0;
position: absolute;
}
ul.nav-menu li {
    float: left;
}
ul.nav-menu li a {
text-align: center;
border-left:1px solid #e9e9e9;
padding:8px 13px;
display:block;
text-decoration:none;
color:#999;
font-weight:bold;
}
ul.nav-menu li a:hover,
ul.nav-menu li a.checked,
ul.nav-menu li:hover ul li a:hover,
ul.nav-menu li:hover ul li a.checked
{
color:Black;
    background-repeat:repeat-x;
    background-position:bottom;
}