/* default skin for navigation boxes */
table.navbox {
    background-color: #f9f9f9;
    border: 1px solid #aaa;
    clear: both;
    font-size: 90%;
    margin: 1em 0em 0em;
    padding: 2px;
    text-align: center;
    width: 100%;
}
table.navbox th {
    background-color: #ccf;
    padding-left: 1em;
    padding-right: 1em;
}
table.navbox tr:not(:first-child) th {
    background-color: #ddf;
}