.warp {
    width: 7.5rem;
    height: 56rem;
    margin: 0 auto;
    position: relative;
}

.top-down {
    background: url(../images/top-down.jpg) no-repeat;
    width: 100%;
    height: 1.33rem;
    position: relative;
    background-size: cover;
    top: 0;
    left: 0;
    margin: 0 auto;
    right: 0;
    bottom: 0;
    z-index: 999;
}

.top-down .nav {
    width: 100%;
    height: 1.83rem;
    display: block;
}

.btn_down {
    width: 2.41rem;
    height: 0.83rem;
    position: absolute;
    background-size: cover;
    top: 0.25rem;
    margin: 0 auto;
    right: 0.25rem;
    bottom: 0;
    z-index: 999;
}

.xiazai_btn {
    display: block;
    margin: 0 auto;
    width: 3.78rem;
    height: 1.32rem;
    background: url(../images/btn_down.png) no-repeat;
    background-size: cover;
    position: relative;
}

.top1 {
    width: 100%;
    height: 10.79rem;
    background: url(../images/bg1.jpg) no-repeat;
    background-size: cover;
    position: relative;

}

.top2 {
    width: 100%;
    height: 9.23rem;
    background: url(../images/bg2.jpg) no-repeat;
    background-size: cover;
    position: relative;
}

.top3 {
    width: 100%;
    height: 11.91rem;
    background: url(../images/bg3.jpg) no-repeat;
    background-size: cover;
    position: relative;
}

.top4 {
    width: 100%;
    height: 11.03rem;
    background: url(../images/bg4.jpg) no-repeat;
    background-size: cover;
    position: relative;
}

.top5 {
    width: 100%;
    height: 9.03rem;
    background: url(../images/bg5.jpg) no-repeat;
    background-size: cover;
    position: relative;
}

.top6 {
    width: 100%;
    height: 2.68rem;
    background: url(../images/bg6.jpg) no-repeat;
    background-size: cover;
    position: relative;
}

.top2 .xiazai{
    top: 0.2rem;
}

.top5 .xiazai{
    top: 7.5rem;
}

.foot {
    position: absolute;
    width: 100%;
    bottom: 0.1rem;
    font-size: 0.12rem;
    text-align: center;
    color: white;
    line-height: 1.2;
}

.foot a {
    color: white;
}