#nav a {
background-color:#90A7AD;
border:1px solid #FFFFFF;
color:#FFFFFF;
display:block;
font-size:10px;
margin-bottom:1px;
opacity:0.75;
padding-bottom:2px;
padding-top:2px;
width:225px;
}

#nav a:hover {
background-color:#BECDD2;
border:1px solid #FFFFFF;
color:#FFFFFF;
display:block;
font-size:10px;
margin-bottom:1px;
opacity:0.35;
padding-bottom:2px;
padding-top:2px;
width:225px;
}

this css is used for nav.