.wrap {
    position: relative;
    margin: 0 auto;
    z-index: 0;
}

.support a {
    position: fixed;
    cursor: pointer;
    top: 1.8rem;
    right: 2%;
    width: 1rem;
    height: 1rem;
    background-image: url("/image/support.webp");
    background-size: 100% 100%;
    z-index: 999;
}

.wrap .downBtn {
    position: absolute;
    cursor: pointer;
    top: 11rem;
    left: 23%;
    width: 55%;
    height: 1rem;
    background-image: url("/img/download.png");
    background-size: 100% 100%;
    background-repeat: no-repeat;
}

.wrap .downBtn2 {
    position: absolute;
    cursor: pointer;
    top: 6.4rem;
    left: 23%;
    width: 55%;
    height: 1rem;
    background-image: url("/img/goback-btn.png");
    background-size: 100% 100%;
    background-repeat: no-repeat;
}