#Download {
    width: 650px;
    height: 212px;
    text-align: center;
    position: absolute;
    top: 735px;
    left: 50%;
    margin-left: -325px;
    z-index: 51;
    border-radius: 5px;
}
#Download .btn_down_s1 {
    float: left;
    width: 198px;
    height: 212px;
    text-indent: -999em;
    margin-left: 0px;
    margin-top: 1px;
}
#Download .btn_down_s2 {
    float: left;
    width: 198px;
    height: 212px;
    text-indent: -999em;
    margin-left: 20px;
    margin-top: 1px;
}
#Download .btn_down_s3 {
    float: left;
    width: 178px;
    height: 212px;
    text-indent: -999em;
    margin-left: 25px;
    margin-top: 1px;
}