html,body{
    height:100%;
    padding:0;
    margin:0;
}
section.container{
    height: 100%;
    position: relative;
    overflow: hidden;
    background: url("../images/main_bg.jpg") no-repeat center / cover;
}

div.container {
    width: 80%;
    height: 100%;
    max-width: 700px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}
div.container > div.left{
    width: 200px;
    margin: 120px 50px 0 0;
}
div.container img.qrcode{
    display: block;
    width: 200px;
    height: 200px;
    border-radius: 10px;
}
div.container a.downloadBtn {
    display: block;
    margin: 20px auto 0;
    height: 40px;
    line-height: 40px;
    font-size: 16px;
    border-radius: 20px;
    background: rgba(253,244,227,.2);
    text-align: center;
    color: #fff;
    text-decoration: none;
}
div.container div.right {
    flex: 1;
    max-width: 480px;
    transform: translateX(30%);
}
div.container img.mobile{
    display: block;
    width: 100%;
}

@media (max-width: 480px) {
    div.container {
        display: block;
    }

    div.container > div.left {
        margin: 60px auto;
    }
    div.container div.right {
        transform: none;
    }

    div.pop {
        position: fixed;
        left: 0;
        right: 0;
        top: 0;
        bottom: 0;
        background: rgba(0, 0, 0, .8);
        z-index: 999;
    }
}