Here is how to horizontally center a Navigation.
The html markup:
The css:
.nav{
border:1px solid #ccc;
border-width:1px 0;
list-style:none;
margin:0;
padding:0;
text-align:center;
}
.nav li{
display:inline;
}
.nav a{
display:inline-block;
padding:10px;
}This code was pulled from: CSS Wizardry