.index_top{
    max-width: 1920px;
    height: 1091px;
    overflow: hidden;
    margin: 0 auto;
    background: url('../image/index_banner.png') no-repeat;
    background-size: cover;
    background-position: center center;
}
.content_index_t{
    width: 1200px;
    height: 500px;
    margin: 52px auto;
}
.content_index_t img{
    width: 100%;
}
.content_index_f{
    width: 1200px;
    height: 500px;
    margin: 0 auto;
}
.content_index_f img{
    width: 585px;
    float: left;
}
.content_index_f img:last-child{
    float: right;
}
.content_index_n{
    position: relative;
    width: 1121px;
    margin: 70px auto 0;
    text-indent:100px;
}
.content_index_n span{
    display: block;
    width: 100%;
    color: #fff;
    font-family: 'DIN-Light';
    font-size: 32px;
    font-weight: 600;
}
.content_index_n i{
    position: absolute;
    left: 0;
    top: 18px;
    display: block;
    width: 42px;
    height: 4px;
    background: #FF8A00;
}