html, body{
 margin:0;
 padding:0;
 text-align:center;
 font-family: arial, verdana, sans-serif;
}

a.navopt {
    display:block;
    color: #000000;
    text-decoration: none;
    font-family:verdana;
    font-size:18px;
}

a.navopt:hover {
    background:#000000;
    color:#ff9900;
}