.threeScreen{
    background-color: #ffffff;
    overflow:hidden;
}
.threeBox{
    width: 1209px;
    height: 620px;
    margin: 140px auto;
    margin-bottom: 0;
    display: flex;
    background-image: url(http://qiniuimage.shengyaapp.com/H5/image/enterpriseWebsite/3/3%E5%B1%8F%E9%80%8F%E6%98%8E.png);
}
.redPacketBox{
    width: 570px;
    height: 160px;
    margin-top: 350px;
}
.redPacketBox > img{
    width: 105px;
    opacity: 0;
}
.ybscBox{
    height: 200px;
    margin-top: 185px;
    margin-left: 50px;
}
.ybsc{
    opacity: 0;
}
.shrink {
    animation-name: shrink;
}
@keyframes shrink{
    0% {
        opacity: 1;
        transform: scale(1);
    }
    100% {
        opacity: 0;
        transform: scale(0);
    }
}