#Download {
    width: 994px;
    height: 120px;
    text-align: center;
    position: absolute;
    top: 950px;
    left: 50%;
    margin-left: -438px;
    z-index: 51;
    border-radius: 5px;
}
#Download .btn_down_s1 {
    float: left;
    width: 470px;
    height: 120px;
    text-indent: -999em;
    margin-right: 0px;
    background: url(../image/btn1.png) no-repeat left top;
}
#Download .btn_down_s2 {
    float: left;
    width: 470px;
    height: 120px;
    text-indent: -999em;
    margin-right: -1px;
    background: url(../image/btn2.png) no-repeat left top;
}
#Download .btn_down_s3 {
    float: left;
    width: 80px;
    height: 316px;
    text-indent: -999em;
    margin-right: -1px;
    background: url(../image/btn3.png) no-repeat left top;
}
#Download .btn_down_s4 {
    float: left;
    width: 80px;
    height: 316px;
    text-indent: -999em;
    margin-right: -1px;
    background: url(../image/btn4.png) no-repeat left top;
}
#Download .btn_down_s1:hover {
    background: url(../image/btn1_1.png) no-repeat left top;
    transform: scale(1.09);
}
#Download .btn_down_s2:hover {
    background: url(../image/btn2_1.png) no-repeat left top;
    transform: scale(1.09);
}
#Download .btn_down_s3:hover {
    background: url(../image/btn3_1.png) no-repeat left top;
    margin-top: -10px;
}
#Download .btn_down_s4:hover {
    background: url(../image/btn4_1.png) no-repeat left top;
    margin-top: -10px;
}