#Download {
    width: 830px;
    height: 107px;
    text-align: center;
    position: absolute;
    top: 920px;
    left: 50%;
    margin-left: -411px;
    z-index: 51;
    border-radius: 5px;
    top: 733px;
    margin-left: -394px;
}

#Download .btn_down_s1 {
    float: left;
    width: 284px;
    height: 107px;
    text-indent: -999em;
    margin-right: 152px;
    animation: sc 2s infinite linear;
    background: url("../image/down.png"/*tpa=http://wvw.8fk.com/sm/%E6%98%9F%E7%BD%97%E9%AA%B7%E9%AB%85/static/image/down.png*/) no-repeat left top;
}

#Download .btn_down_s2 {
    float: left;
    width: 377px;
    height: 107px;
    text-indent: -999em;
    margin-left: 10px;
    animation: sc 2s infinite linear;
    background: url("../image/cz.png"/*tpa=http://wvw.8fk.com/sm/%E6%98%9F%E7%BD%97%E9%AA%B7%E9%AB%85/static/image/cz.png*/) no-repeat left top;
}

@keyframes sc {
    0% {
        transform: scale(1);
    }

    50% {
        transform: scale(0.8);
    }

    100% {
        transform: scale(1);
    }
}