.wrap {
    width: 100%;
    height: 100vh;
}
.wrap .down_box {
    width: 100%;
    height: 100%;
    background: url("../img/download.png?v=2") no-repeat center/cover;
    position: relative;
}
.down_box .down_group {
    position: absolute;
    left: 50%;
    bottom: 5.1rem;
    transform: translateX(-50%);
    width: 5.21rem;
    height: auto;
}
.down_group .group_item {
    width: 5.21rem;
    height: 1.3rem;
    background-size: 100% 100%;
}
.down_group .group_item:first-child {
    background-image: url(../img/android_down_bg.png);
}
.down_group .group_item:last-child {
    background-image: url(../img/ios_down_bg.png);
    margin-top: 0rem;
}
.down_group .group_item a {
    display: block;
    width: 100%;
    height: 100%;
}
.wrap .support {
    position: absolute;
    left: 0;
    bottom: .6rem;
    width: 100%;
    text-align: center;
    font-size: .24rem;
    color: #666666;
}
.support span {
    position: relative;
}
.support span::before {
    content: '';
    display: block;
    width: .92rem;
    height: .02rem;
    background: #E1E1E1;
    position: absolute;
    top: 50%;
    left: -1.15rem;
    transform: translateY(-50%);
}
.support span::after {
    content: '';
    display: block;
    width: .92rem;
    height: .02rem;
    background: #E1E1E1;
    position: absolute;
    top: 50%;
    right: -1.15rem;
    transform: translateY(-50%);
}