#civ_precedenti{
    padding:0;
    margin:0;
    margin:0px auto;
    width: 280px;
    height: 410px;
}


#civ_precedenti ul{
    padding:0;
    margin:0;
}


#civ_precedenti li{
    position: relative;
    float: left;
    list-style: none;
    margin-top: 6px;
    padding:0;

} 

#civ_precedenti li a{
    width:280px;
    height: 35px;
    display: block;
    text-decoration:none;
    text-align: center;
    line-height: 30px;
    background-color: none;
    color: white;
    background-image: url(immagini/menu/button_su_1_dx.png);
} 

#civ_precedenti li a:hover{
    color: #ffff00;
    background-image: url(immagini/menu/button_giu_1_dx.png);
}

#civ_precedenti ul ul{
    position: absolute;
    top: 35px;
    visibility: hidden;
}

#civ_precedenti ul li:hover ul{
    visibility:visible;
}