body{
        margin: 0px auto;
        background-color: black;
        text-align:center;
}

div#top {
        height:90px;
        background-color: black;
          line-height: 80px;
          color:#FFFFFF;
          font-size:60px;
}

div#navi {
        height:0px;
        width:100%;
        background-color:green;
        position:absolute;
}

div#content {
    margin: 70px auto 60px auto;
        width:500px;
    padding-right: 10px;
    text-align:center;
}