@media screen and (max-width: 1200px){
    .w1200{width:100%;}
    .header{display: flex;justify-content: space-between;align-items: center;padding-right: 15px;}
    .header_nav{display: none;}
    .head_logo{max-width:60%;max-height: 100%;}
    .m_btn{max-width:10%;max-height: 100%;display: block;}
    .about_index_box .left img{width: 100%;}
    .about_index_box .right{width: 100%;height: auto;}
    .array_index li{width: 50%;border-bottom: 1px solid #fff;}
    .array_index li:nth-child(3){border-bottom:none;}
    .advantage_index{height: 240px;}
    .sideImg,.sideImg1,.sideImg2{display: none;}
    .news_index_box .left{width: 100%;}
    .about_index {padding: 66px 0 66px 0;}
    .news_index_box .right{width: 100%;}
    .news_index_box .right img{width: 100%;}
    .footer_logo{width: 100%;}
    .footer_nav{display: none;}
    .footer_contact{display: block;margin-top: 20px;}
    .footer_contact li{width: 100%;}
    .footer_b{line-height: 1.5}

    .header_box{height: 500px;}
    .header_box .p1{font-size:30px;margin-top: 100px;}
    .header_box .p2{font-size:22px;}
    .search_box , .search{width: 100%;}
    .pro_left{width: 100%;height: auto;margin-top: 0;}
    .pro_left img{width: 100%;}
    .pro_right{width: 100%;padding: 5px;margin: 0}
    .pro_right .title{font-size: 20px}
    .parameter{padding-bottom: 0}
    .parameter img{width: 100%;}
    .parameter_box .swiper-pagination{width: 90%!important;}

    .case_index_box{height: 700px;}
    .case_pre , .case_next{display: none}
}

@media screen and (max-width: 767px){
    .header{height: 90px;}
    .footer_img{height: 266px;}
    .footer{margin-top: -96px}
    .case_index_box{height: 543px;}
    .footer_m{display: block;}
}