.banner {
    width: 100%;
    min-width: 1200px;
    height: 980px;
    padding-top: 300px;
    background-image: url("../images/product/beijing.png");
}

.banner__depict {
    width: 580px;
    margin: 0 auto;
    color: #333333;
}

.banner__h2 {
    font-size: 80px;
    font-weight: bold;
}

.banner__span {
    display: inline-block;
    width: 120px;
    font-size: 24px;
    margin-top: 30px;
}

.banner__btn {
    display: block;
    width: 220px;
    height: 68px;
    border: 2px solid #FFFFFF;
    background: rgba(255, 255, 255, 0.4000);
    border-radius: 47px;
    color: #000;
    font-size: 16px;
    line-height: 68px;
    margin-bottom: 12px;
    padding-left: 24px;
    cursor: pointer;
}
.banner__download{
    position: relative;
    margin-top:100px;
    display: flex;
    justify-content: center
}
/*弹框*/
.popout{
    position: absolute;
    top:-100px;
    left:150px;
    width: 300px;
    height: 90px;
    border-radius: 5px;
    color: #FFF;
    font-size: 16px;
    text-align: center;
    padding: 25px;
    background-color:rgba(0,0,0,.3);
}
.show{
    animation: r 5s forwards 0s
}
@keyframes r {
    from{
        transform: translate(0,0);
        opacity: 1;
    }
    to{
        transform: translate(0,-60px);
        opacity: 0;
    }
}