.index-container .swiper-slide {
    position: relative;
    overflow: hidden;
}
.index-container {
    position: relative;
    width: 100%;
    height: 800px;
}
.index-container .index-swiper_slide {
    background-size: 1920px 924px;
    background-position: center center;
}
.index-swiper_slide_1 {
    background: #F08200 url('../images/home_banner1.jpg') no-repeat;
}
.index-swiper_slide_2 {
    background: #F08200 url('../images/home_banner2.jpg') no-repeat;
}
.index-swiper_slide_3 {
    background: #F08200 url('../images/home_banner3.jpg') no-repeat;
}
.index-swiper_slide_4 {
    background: #F08200 url('../images/home_banner4.jpg') no-repeat;
}
.index-swiper_slide_img {
    position: absolute;
    width: 1920px;
    top: 50%;
    -webkit-transform: translate(-50%,-50%);
        -ms-transform: translate(-50%,-50%);
            transform: translate(-50%,-50%);
    left: 50%;
    z-index: 0;
}
.index-swiper_slide_content {
    position: relative;
    margin-top: 23%;
    color: #333;
}
.index-swiper_slide_tit {
    font-size: 36px;
}
.index-swiper_slide_desc {
    line-height: 2em;
}
.index-swiper_pagination {
    display: inline-block;
}
.index-swiper_control {
    width: 100%;
    position: absolute;
    bottom: 10.9%;
    z-index: 20;
    text-align: center;
}
.index-swiper_control .container {
    position: relative;
}
.index-swiper_btn {
    position: absolute;
    top: 0;
    -webkit-transform: translateY(-50%);
        -ms-transform: translateY(-50%);
            transform: translateY(-50%);
    right: 0;
}
.index-swiper_pagination .swiper-pagination-switch {
    width: 24px;
    height: 4px;
    display: inline-block;
    background: white;
    cursor: pointer;
    margin: 0 8px;
}
.index-swiper_pagination .swiper-active-switch {
  background: #333;
}

.index-swiper_arrow {
    position: absolute;
    top: 50%;
    -webkit-transform: translateY(-50%);
        -ms-transform: translateY(-50%);
            transform: translateY(-50%);
    width: 50px;
    height: 50px;
    background-size: 100% 100%;
    cursor: pointer;
}
.index-swiper_arrow-left {
    background: url('../images/home_btn_l.png') no-repeat;
    left: 8.33%;
}
.index-swiper_arrow-right {
    background: url('../images/home_btn_r.png') no-repeat;
    right: 8.33%;
}
.index-swiper_arrow-left:hover {
    background: url('../images/home_btn_l_hover.png') no-repeat;
}
.index-swiper_arrow-right:hover {
    background: url('../images/home_btn_r_hover.png') no-repeat;
}