.header {
    width: 1200px;
    height: 500px;
    margin: 0 auto;
}

.nav-wrap {
    position: relative;
    top: 405px;
    left: 157px;
    height: 44px;
    width: 350px;
    display: flex;
    justify-content: space-between;
}

.nav-btn {
    display: block;
    width: 150px;
    height: 44px;
    background: #fff;
    color: #607ce8;
    text-align: center;
    line-height: 44px;
    border-radius: 4px;
    font-size: 18px;
    text-decoration: none;
    outline: none;
}

.img-btn {
    display: block;
    width: 290px;
    height: 62px;
    background: url('../img/btn.png') no-repeat center center;
    margin: 0 auto;
}

.btn-wrap {
    position: relative;
    width: 100%;
    margin: 0;
}

.wrap-1 {
    top: 700px;
}

.wrap-2 {
    top: 680px;
}

.wrap-3 {
    top: 893px;
}
.wrap-4 {
    top: 476px;
}

/* 轮播图 */
.swiper-top {
    width: 895px;
    margin: 0 auto;
    height: 117px;
    font-size: 0;
    position: relative;
}

.swiper-top>img {
    position: absolute;
}

.swiper-top>img:nth-child(1) {
    z-index: 10;
}

.swiper-top>img:nth-child(2) {
    z-index: 5;
    left: 277px;
}

.swiper-top>img:nth-child(3) {
    left: 554px;
}

.swiper-bottom {
    width: 1200px;
    margin: 25px auto 0;
    height: 662px;
}

.swiper-container {
    width: 1018px;
    height: 662px;
}

.swiper-pagination {
    position: absolute;
    z-index: 20;
    bottom: 42px;
    width: 100%;
    text-align: center;
}
.swiper-pagination span{
    width: 12px;
    height: 12px;
    margin: 0 12px;
}

.swiper-pagination-switch {
    display: inline-block;
    width: 12px;
    height: 12px;
    border-radius: 8px;
    background: #fff;
    margin: 0 12px;
    opacity: 0.8;
    border: 2px solid #5a78ea;
    cursor: pointer;
}

.swiper-active-switch {
    background: #5a78ea;
}
.swiper-slide{
    position: relative;
}
.swiper-slide a{
    position: absolute;
    width: 290px;
    height: 68px;
    background: url('../img/btn.png') no-repeat center center;
    z-index: 20;
    left: 55px;
    top: 436px;
}