@media screen and (max-width: 1450px) {
  
    .w_100 {
        width: 1200px !important;
    }
    .banner .txt .p1 {
        font-size: 45px;
        margin-bottom: 35px;
    }
    .banner .txt .p2 {
        font-size: 24px;
        line-height: 36px;
        margin-bottom: 55px;
    }
    .banner .txt .p3 a {
        width: 180px;
        font-size: 18px;
    }
    .products_box {
        margin: 55px 0 0;
    }
    .products_box .search {
        width: 100%;
        justify-content: center;
    }
    .products_box .search .content {
        width: 900px;
        height: 80px;
        line-height: 80px;
        margin-right: 50px;
    }
    .products_box .search .input input {
        font-size: 24px;
    }
    .products_box .search .select .current_txt {
        height: 80px;
        line-height: 80px;
        font-size: 20px;
    }
    .products_box .search .select_list {
        top: 80px;
    }
    .products_box .search .button input {
        height: 80px;
        line-height: 80px;
        width: 80px;
    }
    .products_box .search .select_list .item {
        font-size: 20px;
        line-height: 40px;
        height: 40px;
    }
    .products_box .search .input {
        height: 80px;
        line-height: 80px;
    }
    .products_box .swiper {
        margin: 55px auto;
    }
    .mySwiperTop .swiper-slide .content .w_100 .pic {
        margin-right: 100px;
    }
    .mySwiperTop .swiper-slide .content .w_100 .pic img {
        height: 300px;
        max-width: none;
    }
}

@media screen and (max-width: 1350px) {
  
}

@media screen and (max-width: 1200px) {
    body {
        max-width: 720px;
        margin: 0 auto;
    }
    .common_head {
        display: none;
    }
        
    .banner {
        margin-top: 45px;
        position: relative;
    }
    .w_100,
    .web_100 {
        width: 96% !important;
        margin: 0 auto;
    }
    
    .common_web_head {
        display: block;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        margin: 0 auto;
        z-index: 99;
        background: #f1f1f1;
        width: 100%;
        max-width: 720px;
        padding: 10px ;
    }
    .common_web_head .logo img{
        height: 25px;
    }
    .common_web_head .menu img {
        height: 25px;
    }
    .web_nav {
        display: block;
        position: fixed;
        z-index: 99;
        width: 100%;
        height: 100%;
        right: -100%;
        margin: 0 auto;
        top: 0;
        padding: 20px;
        background-color: #fff;
        transition: 0.3s;
    }
    .web_nav.active {
        right: 0;
    }
    .web_nav .close img,
    .web_nav .logo img {
        height: 25px;
    }
    .web_nav> .flex {
        flex-wrap: wrap;
    }
    .web_nav> .flex>.item {
        width: 100%;
        line-height: 40px;
        border-bottom: 2px solid #f1f1f1;
    }
    .web_nav> .flex .item .child {
        padding-left: 20px ;
    }

    .products_box .search .content {
        width: 80%;
        height: 60px;
        line-height: 60px;
    }
    .products_box .search .input {
        height: 60px;
        line-height: 60px;
        width: 60%;
    }
    .products_box .search .input input {
        padding: 0 20px;
        font-size: 18px;
    }
    .products_box .search .select .current_txt {
        height: 60px;
        line-height: 60px;
        font-size: 18px;
        background-size: 20px;
    }
    .products_box .search .select_list {
        top: 60px;
    }
    .products_box .search .button input {
        height: 60px;
        line-height: 60px;
        width: 60px;
        background-size: 20px;
    }
    .products_box .swiper ,
    .products_box {
        margin: 25px auto ;
    }
    .swiper_top .swiper-button-next3 {
        right: 2%;
    }
    .swiper_top .swiper-button-prev3 {
        left: 2%;
    }
    .mySwiperTop .swiper-slide {
        height: 300px;
    }
    .mySwiperTop .swiper-slide-active .bg {
        overflow: hidden;
    }
    .mySwiperTop .swiper-slide-active .bg img {
        max-width: none;
        height: 100%;
    }
    .mySwiperTop .swiper-slide .content .w_100 .pic {
        margin-right: 20px;
    }
    .mySwiperTop .swiper-slide .content .w_100 .pic img {
        max-width: none;
        height: 250px;
    }
    .mySwiperTop .swiper-slide .content .w_100 .txt .p1 {
        font-size: 22px;
        margin-bottom: 15px;
        line-height: 25px;
    }
    .mySwiperTop .swiper-slide .content .w_100 .txt .p2 {
        font-size: 14px;
        line-height: 20px;
        margin-bottom: 30px;
    } 
    .mySwiperTop .swiper-slide .content .w_100 .txt .p3 a {
        font-size: 18px;
        height: 42px;
        line-height: 40px;
        width: 120px;
    }
    .products_box1 {
        padding-bottom: 25px;
    }
    .products_box1 .swiper_botoom{
        display: none;
    }
    .about_box1 .flex {
        flex-wrap: wrap;
    }
    .about_box1 .pic { 
        width: 100%;
    }
    .about_box1 .box1 {
        margin-bottom: 25px;
    }
    .about_box1 .box1 .date {
        padding-right: 10px;
        margin-right: 10px;
    }
    .about_box2 {
        padding: 25px 0;
    }
    .about_box2 .item {
        width: 49%;
        margin-bottom: 20px;
    }
    .contact_box1 {
        padding: 25px 0;
    }
    .contact_box1 .flex {
        flex-wrap: wrap;
    }
    .contact_box1 .flex .line,
    .contact_box1 .flex .info {
        width: 100%;
        margin-bottom: 20px;
    }
    .contact_box1 .w_100 .line .textarea textarea {
        width: 100%;
    }
    .contact_box1 .w_100 .info .name {
        padding: 0;
    }
    .contact_box2 {
        padding: 25px 0;
    }
    .contact_box2 .p1 img {
        width: 70%;
    }
    .contact_box2 .p2 {
        font-size: 36px;
    }
    .contact_box2 .p3 {
        font-size: 20px;
        line-height: 30px;
        margin-bottom: 25px;
        padding-bottom: 15px;
    }
    .common_footer {
        height: auto;
        padding: 15px 0;
        line-height: 25px;
    }
    .banner .txt .p1 {
        font-size: 26px;
        margin-bottom: 10px;
        line-height: 30px;
    }
    .banner .txt .p3 a{
        width: 120px;
        line-height: 28px;
        height: 30px;
        font-size: 12px;
    }
    .banner .txt .p2 {
        font-size: 16px;
        margin-bottom: 10px;
    }
    .products_box .search .content {
        margin-right: 10px;
        height: 40px;
        line-height: 40px;
    }
    .products_box .search .input input {
        font-size: 14px;
    }
    .products_box .search .input {
        height: 40px;
        line-height: 40px;
        width: 50%;
    }
    .products_box .search .select .current_txt {
        height: 40px;
        line-height: 40px;
        font-size: 14px;
        background-size: 10px;
    }
    .products_box .search .button input {
        height: 40px;
        line-height: 40px;
        width: 40px;
        background-size: 15px;
    }
    .products_box .search .select {
        padding: 0 15px;
    }
    .products_box .search .select_list {
        top: 40px;
    }
    .products_box .search .select_list .item {
        font-size: 14px;
        line-height: 30px;
        height: 30px;
    } 
    .products_box .swiper .swiper-slide .txt p {
        height: 40px;
        line-height: 40px;
        font-size: 18px;
    }
    .mySwiperTop .swiper-slide .content .w_100 .pic img {
        height: 100px;
    }
    .mySwiperTop .swiper-slide .content .w_100 .txt .p3 a {
        font-size: 14px;
    }
    .about_box1 .pic {
        margin-top: 25px;
    }
    .about_box1 .box2 .txt .p3 {
        font-size: 14px;
        margin-bottom: 20px;
        line-height: 25px;
    }
    .about_box1 .box2 .txt .p2 {
        font-size: 24px;
        line-height: 30px;
        padding-bottom: 15px;
        margin-bottom: 10px;
        margin-top: 10px;
    }
    .about_box1 .box1 .txt .p2 {
        font-size: 12px;
        line-height: 20px;
    }
    .about_box1 {
        padding-bottom: 25px;
    }
    .about_box1 .pic {
        text-align: center;
    }
    .about_box1 .pic img {
        width: 70%;
    }
    .contact_box1 .w_100 .line .name {
        margin-bottom: 10px;
        font-size: 18px;
    }
    .contact_box1 .w_100 .info .name span img,
    .contact_box1 .w_100 .line .name img {
        height: 15px;
    }
    .contact_box1 .w_100 .info .name a {
        width: 120px;
        font-size: 14px;
        height: 40px;
        line-height: 40px;
    }
    .contact_box2 .p3 {
        margin-bottom: 10px;
        padding-bottom: 10px;
    }
    .contact_box2 .p2 {
        font-size: 24px;
        line-height: 40px;
    }
    .contact_box2 .p4 {
        font-size: 28px;
    }
    .contact_box2 .p4 img {
        height: 28px;
    }
    .contact_box2 .p5 {
        margin: 25px 0;
    }
    .contact_box2 .p5 a img {
        height: 60px;
    }
    .contact_box2 .p5 a span {
        font-size: 16px;
        line-height: 45px;
    }
    .contact_box2 .p6 {
        line-height: 20px;
        width: 90%;
        font-size: 14px;
    }
    .common_footer {
        font-size: 12px;
        line-height: 20px;
    }
}