#Download {
    width: 764px;
    height: 172px;
    text-align: center;
    position: absolute;
    top: 876px;
    left: 50%;
    margin-left: -390px;
    z-index: 51;
    border-radius: 5px;
    background: url(../image/down6.png) no-repeat left top;
}
#Download .btn_down_s1 {
    float: left;
    width: 238px;
    height: 108px;
    text-indent: -999em;
    margin-left: 94px;
    margin-top: 33px;
}
#Download .btn_down_s2 {
    float: left;
    width: 98px;
    height: 101px;
    text-indent: -999em;
    margin-left: 15px;
    margin-top: 37px;
}
#Download .btn_down_s3 {
    float: left;
    width: 98px;
    height: 101px;
    text-indent: -999em;
    margin-left: 15px;
    margin-top: 37px;
}
#Download .btn_down_s4 {
    float: left;
    width: 105px;
    height: 104px;
    text-indent: -999em;
    overflow: hidden;
    margin-left: 16px;
    margin-top: 33px;
}