@media screen and (max-width:1520px) {
   .hzkstd li .text {
        width: calc(100% - 4rem);
    }
    .hzkstd li .pic {
        width: 4rem;
    }
}

@media screen and (max-width:1500px) {
    html {
        font-size: 90px!important;
    }
    .block {
        width: auto;
        padding-left: 40px;
        padding-right: 40px;
        box-sizing: border-box;
    }
    .header .d2 .block2 {
        margin: 0 100px 0 40px;
        padding: 0;
    }
    .body_home .banner .child .fz30 {
        bottom: 50px;
    }
    .body_home .banner .navg {
        bottom: 50px;
    }
    /* 科学研究 */
    .cont4_box::before {
        width: 3.49rem;
        height: 8.31rem;
        bottom: 0.85rem;
    }
    .cont4_box::after {
        width: 5rem;
        height: 2.02rem;
    }

}

@media screen and (max-width:1360px) {
    html {
        font-size: 80px!important;
    }
    .header .logo img {
        max-height: 55%;
    }
    .navbar .navbar-nav>li {
        padding-left: 10px;
        padding-right: 10px;
    }
    .navbar .navbar-nav>li>a {
        padding: 0px 10px;
    }

    /* 新闻动态 */
    /* .xwdt_box .xwlbo{
        width: 7.4rem;
    }
    .xwdt_box .lbwz{
        width: calc(100% - 7.4rem);
    }
    .xwdt_box::after{
        left: 6.6rem;
    }
    .xwdt_box .lbwz li .text a{
        padding-top: 0.05rem;
        padding-bottom: 0.05rem;
    } */
}

@media screen and (max-width:1200px) {
    html {
        font-size: 75px!important;
    }
    .block {
        padding-left: 20px;
        padding-right: 20px;
    }
    .header .d2 .block2 {
        margin: 0 100px 0 10px;
    }
    .header2 .d2 .navg a {
        margin: 0 15px;
    }
    .navbar .navbar-nav>li {
        padding-left: 5px;
        padding-right: 5px;
    }
    .navbar .navbar-nav>li>a {
        padding: 0px 5px;
    }
    .home5 .gklf {
        width: calc(100% - 6rem);
    }
    .home5 .gkrg {
        width: 6rem;
        height: 5.4rem;
    }
    .home5 .gkrg .playBtn {
        width: 1.1rem;
        height: 0.83rem;
    }
    .home5 .gkbox::after {
        display: none;
    }
    .hzkstd li .text {
        width: calc(100% - 3.6rem);
    }
    .hzkstd li .pic {
        width: 3.6rem;
    }
    /* 行业新闻 */
    .cont3_box .ct3lf {
        width: calc(100% - 7.6rem);
    }
    .cont3_box .ct3rg {
        width: 7.3rem;
    }
 .keyan .swiper-slide.swiper-slide-active .lb{
   margin-top:0;
}
    .keyan .swiper-slide.swiper-slide-active .lb .mar {
        transform: translateX(0rem) rotateX(0);
    }
    .lbxq li .text {
        padding-top: 0.2rem;
        padding-bottom: 0.2rem;
    }
    /* 科研成果 */
    .keyan {
        width: 90%;
        margin: 0.2rem auto 0;
    }
    .keyan .swiper-slide {
        transform: scale(1);
    }
    .keyan .swiper-slide-active {
        transform: translateY(0) scale(1);
        z-index: 10;
    }
    .keyan::before,
    .keyan::after {
        display: none;
    }
    .keyan .lb .mar .pic {
        padding-bottom: 56%;
    }
    .keyan .lb {
        perspective: none;
    }
    .keyan .swiper-slide-prev .lb .mar {
        transform: translateX(0) rotateY(0);
    }
    .keyan .swiper-slide-active .lb .mar {
        transform: rotateX(0);
    }
    .keyan .swiper-slide-next .lb .mar {
        transform: translateX(0) rotateY(0);
    }
    .keyan .lb .mar .text h2 {
        font-size: 0.2rem;
    }
    .keyan .lb .mar .text span {
        font-size: 0.16rem;
        padding-left: 0.3rem;
    }
    .keyan .lb .mar .text {
        opacity: 1;
    }
    .keyan .keyan-prev {
        left: -0.2rem;
        top: 30%;
    }
    .keyan .keyan-next {
        right: -0.2rem;
        top: 30%;
    }
    .keyan .lb {
        perspective: none;
        width: 100%;
        margin-top: 0;
    }

    .keyan .swiper-slide.swiper-slide-prev .lb .mar {
        transform: translateX(0rem) rotateY(0deg);
    }
    .keyan .swiper-slide.swiper-slide-next .lb .mar {
        transform: translateX(0rem) rotateY(0deg);
    }
    .keyan .lb .mar .text span::after,
    .keyan .lb .mar .text {
        opacity: 1;
    }
    .keyan .keyan-prev,
    .keyan .keyan-next {
        display: none;
    }
}

@media screen and (max-width:1025px) {
    html {
        font-size: 68px!important;
    }
    .body.page {
        padding-top: 61px;
    }
    .header {
        transform: none;
        opacity: 1;
    }
    .body_home.showdiv .header,
    .header.mobile {
        background: #560882;
        height: auto;
    }
.header.active{
      background: none;
}
    .header .d2 {
        height: 60px;
        border-top-style: none;
         background: #560882; 
    }
    .header .d2 .block2 {
        display: -ms-flexbox;
        display: flex;
        -ms-flex-pack: justify;
        justify-content: space-between;
        -ms-flex-align: center;
        align-items: center;
        height: 100%;
        padding: 0;
        margin: 0 0 0 20px;
    }
    .header .hdrg .nav_r {
        display: none;
    }
    .header .tools .a {
        background: none;
    }
    .header .logo {
        width: 220px;
        height: 60px;
        margin-top: 0px;
        position: relative;
    }
    .header .logo img {
        max-width: 100%;
        max-height: 100%;
        position: absolute;
        top: 50%;
        left: 50%;
        transform: translate(-50%, -50%);
    }
    .header .tools {
        top: 18px;
        right: 65px;
    }
    .header .tools .a {
        width: 24px;
        height: 24px;
        line-height: normal;
    }
    .header .tools .sc a::after {
        font-size: 16px;
    }
    /* 导航样式开始 */
    body.side-right .wrapper .mask {
        position: fixed;
        z-index: 12;
        right: 0;
        left: 0;
        top: 0;
        height: 100%;
        background: rgba(0, 0, 0, 0.6);
    }
    .navbar {
        display: block;
        margin-right: 0;
        top: 31px !important;
        right: 10px !important;
    }
    .navbar .menuBtn {
        width: 30px;
        cursor: pointer;
        position: absolute;
        right: 10px;
        top: 50%;
        z-index: 9;
        -webkit-transform: translateY(-50%);
        -moz-transform: translateY(-50%);
        -ms-transform: translateY(-50%);
        -o-transform: translateY(-50%);
        transform: translateY(-50%);
    }
    .navbar .menuBtn b {
        display: block;
        height: 3px;
        background-color: #fff;
        margin-bottom: 5px;
        border-radius: 2px;
        transition: 0.3s;
        -ms-transition: 0.3s;
        -moz-transition: 0.3s;
        -webkit-transition: 0.3s;
        -o-transition: 0.3s;
    }
    .navbar .menuBtn2 {
        display: none;
    }
    .navbar .menuslider {
        opacity: 0;
        visibility: hidden;
        position: fixed;
        overflow-y: auto !important;
        overflow-x: hidden !important;
        display: block;
        z-index: 99;
        width: 100%;
        height: calc(100% - 60px) !important;
        left: 0;
        top: 70px;
        -webkit-transition: all 0.3s ease-in-out;
        -moz-transition: all 0.3s ease-in-out;
        -o-transition: all 0.3s ease-in-out;
        -ms-transition: all 0.3s ease-in-out;
        transition: all 0.3s ease-in-out;
    }
    .navbar .menuslider .navbar-nav {
        margin-top: 20px;
        overflow: hidden;
        padding: 0 5%;
    }
    .navbar .menuslider a {
        font-weight: normal !important;
    }
    .navbar .menuslider .nav-child {
        width: 100%;
        display: none;
        position: relative !important;
        background-color: transparent;
        float: none;
        border: none;
        top: 0 !important;
        left: 0 !important;
        padding: 10px 0 10px 10px !important;
        margin: 0 0 -1px 0 !important;
        opacity: 1;
        visibility: visible;
    }
    .navbar .menuslider .nav-child li {
        text-align: left;
        padding: 0;
    }
 .navbar .menuslider .nav-child li:hover {
    background: none;
}
    .navbar .menuslider .nav-child li a {
        padding: 5px 10px;
    }

    .navbar .menuslider .nav-child li>dl {
        display: none;
        position: relative;
        left: 0;
        top: 0;
        background: none;
        padding-left: 15px;
    }
    .navbar .menuslider .nav-child li.hasChild.on>dl {
        display: block;
    }
    .navbar .menuslider .nav-child:before {
        display: none;
    }
    .navbar .navbar-nav>li {
        width: 100% !important;
        display: block;
        position: relative;
        text-align: left !important;
        padding: 10px !important;
        height: auto;
        border-bottom: 1px solid #ccc;
        background: none !important;
        box-sizing: border-box;
    }
    .navbar .navbar-nav>li a {
        text-align: left !important;
        line-height: 24px;
        color: #333 !important;
        background: none !important;
        border-radius: 0;
    }
    .navbar .navbar-nav>li.hasChild>em {
        position: absolute;
        top: 0;
        right: 10px;
        z-index: 9;
        width: 20px;
        height: 45px;
        background: url(../images/nav-down.png) center no-repeat;
        background-size: 70%;
        cursor: pointer;
        -webkit-transition: all 0.5s ease;
        -moz-transition: all 0.5s ease;
        -ms-transition: all 0.5s ease;
        -o-transition: all 0.5s ease;
        transition: all 0.5s ease;
    }
    .navbar .navbar-nav>li.hasChild.on>em {
        transform: rotate(45deg);
    }
    .navbar .hasChild:before {
        display: none;
    }
    .navbar li.hasChild.on .nav-child {
        display: block !important;
        background: none;
    }
    .navbar .menu-bott {
        display: block;
        overflow: hidden;
        width: 100%;
        background: #560882;
        padding: 15px 5%;
        box-sizing: border-box;
    }
    .navbar .menu-bott .top-right {
        display: block;
        float: left;
        /* margin-top: 10px; */
    }
    body.side-right .navbar .menuslider {
        opacity: 1;
        visibility: visible;
        top: 60px;
        background: #fff;
    }
    body.side-right .navbar .menuBtn {
        display: none;
    }
    body.side-right .navbar .menuBtn2 {
        display: block;
    }
    body.side-right .navbar .menuBtn b {
        display: none;
        margin: 0;
        position: absolute;
        left: 0;
        top: 50%;
        width: 30px;
    }
    body.side-right .navbar .menuBtn b:first-child {
        display: block;
        transform: rotate(45deg);
        -webkit-transform: rotate(45deg);
        -o-transform: rotate(45deg);
        -ms-transform: rotate(45deg);
    }
    body.side-right .navbar .menuBtn b:last-child {
        display: block;
        transform: rotate(-45deg);
        -webkit-transform: rotate(-45deg);
        -o-transform: rotate(-45deg);
        -ms-transform: rotate(-45deg);
    }
    .navbar .menu-bott .top-right ul {
        padding: 10px 0;
        overflow: hidden;
    }
    .navbar .menu-bott .top-right li {
        float: left;
        line-height: 16px;
        cursor: pointer;
        padding: 0 20px;
        position: relative;
    }
    .navbar .menu-bott .top-right li a {
        display: block;
        font-size: 14px;
        color: #fff;
    }
    .navbar .menu-bott .top-right li::before {
        content: "";
        position: absolute;
        right: 0;
        top: 2px;
        width: 1px;
        height: 14px;
        background: #fff;
        transform: rotate(15deg);
    }
    .navbar .menu-bott .top-right li:nth-last-of-type(1)::before {
        display: none;
    }
    .navbar .menu-bott .top-right li:nth-last-of-type(1) a {
        padding-left: 22px;
        background: url(../images/icon_eg.png) left center no-repeat;
        background-size: auto 100%;
    }
    /* 导航样式结束 */
    .home,
    .home body {
        height: auto;
        overflow: auto;
    }
    .body_home {
        height: auto;
        overflow: visible;
    }
    .layer .search_box {
        width: 100%;
        padding: 0 10px;
        box-sizing: border-box;
    }
.layer .search_box .kw{
   width: calc(100% - 120px);
}
    .layer .close {
        font-size: 24px;
        width: 40px;
        height: 40px;
        line-height: 40px;
        right: 20px;
        top: 20px;
    }
    .layer .leader_box .close {
        color: #aaa;
        right: 20px;
        top: 20px;
        font-size: 30px;
        bottom: auto;
        margin: 0;
        left: auto;
    }
    .block {
        padding-left: 18px;
        padding-right: 18px;
    }
    .body_home .bb {
        display: none;
    }
#A{
  height:auto;
}
    .body_home .banner {
        height: 42vw;
    }
    .body_home .banner .navg {
        left: 0;
        margin-left: 0;
        width: 100%;
        height: auto;
        background: none;
        bottom: 15px;
    }
    .body_home .banner .navg li {
        width: 12px;
        height: 12px;
        margin: 0 8px;
        border-radius: 50%;
        background: rgba(255, 255, 255, 0.6);
    }
    .body_home .banner .navg li.slick-active {
        background: #fff;
    }
    .body_home .banner .navg li::after,
    .body_home .banner .navg li.slick-active::before {
        display: none;
    }
    .body_home.showdiv .bb {
        opacity: 0;
        visibility: hidden;
    }
    .body_b {
        width: auto;
        height: auto;
        position: static;
        opacity: 1;
        transform: none;
        overflow: hidden;
    }
    .home5 {
        padding: 0.5rem 0;
    }
    .home5 .content {
        margin-top: 20px;
    }
    .yqlj .nr {
        padding-right: 0;
    }
    /* 列表页 */
    .header.hdfixed {
        transform: initial;
        background: #560882;
           padding-bottom: 0;
    height: auto;    
    }
    .header.hdfixed.showon {
        background: #560882;
        height: auto;
    }
    .header.hdfixed.showon .d2 {
        background: none;
    }

.list_banner{
  margin-top: 0.85rem;
}

}

@media screen and (max-width:950px) {
    .title h1,
    .title h2 {
        font-size: 0.38rem;
    }
    .title h1::after,
    .cont5_box .title h1::after {
        background-size: auto 0.25rem;
    }
    .home5 .gklf {
        width: calc(100% - 0rem);
    }
    .home5 .gklf .gknr {
        margin-top: 0.25rem;
    }
    .home5 .gklf .gknr p {
        height: auto;
        max-height: 2.4rem;
    }
    .home5 .gklf .more {
        margin-bottom: 0.25rem;
    }
    .home5 .gkrg {
        float: none;
        margin: auto;
        overflow: hidden;
        width: 5rem;
        height: 4.51rem;
    }
    .home5 .gklf .gknr {
        padding-right: 0;
        margin-bottom: 0.35rem;
    }
    .home5 .gkrg .playBtn {
        width: 0.8rem;
        height: 0.61rem;
    }
    .cont2_box {
        padding: 0.5rem 0 0.8rem;
    }
    /* 新闻动态 */
    .xwdt_box {
        position: initial;
    }
    .xwdt_box::after {
        display: none;
    }
    .xwdt_box .xwlbo {
        width: 100%;
        position: relative;
        margin-bottom: 0.25rem;
    }
    .xwlbo .lb .text {
        background: #fff;
        margin-right: 0rem;
        padding-right: 0.25rem;
        padding-bottom: 0.6rem;
    }
    .xwlbo .xwlbo-dot {
        right: auto;
        left: 0;
        bottom: 0.15rem;
        width: calc(100% - 0rem);
    }
    .xwdt_box .lbwz {
        width: calc(100% - 0rem);
    }
    .xwdt_box .lbwz li .text {
        border-bottom: #E7E7E7 1px dashed;
        padding-left: 0;
    }
    .xwdt_box .lbwz li .text a {
        border-bottom-style: none;
        padding: 0.1rem 0.2rem;
    }
    .xwdt_box .lbwz li:hover .text,
    .xwdt_box .lbwz li.on .text {
        border-bottom: rgba(0, 0, 0, 0) 1px solid;
    }
    /* 通知公告 */
    .tzggdh li.hover h1,
    .tzggdh li.hover h2 {
        font-size: 0.38rem;
    }
    .tzggdh li h1 {
        font-size: 0.3rem;
    }
    .tzggdh li.hover h1::after {
        background-size: auto 0.25rem;
        right: -0.3rem;
    }
    .cont3_box .ct3lf {
        width: calc(100% - 0rem);
        margin-bottom: 0.5rem;
    }
    .cont3_box .ct3rg {
        width: 100%;
    }
    .cont3_box {
        padding: 0.5rem 0 0.8rem;
    }
    .hytj {
        padding-top: 0.4rem;
    }
    .cont4_box::before {
        width: 2.51rem;
        height: 5.98rem;
        bottom: 1.9rem;
    }
    .cont4_box::after {
        width: 3rem;
        height: 1.21rem;
    }
    .kexue ul:nth-of-type(1) {
        padding-left: 1rem;
    }
    .kexue ul:nth-of-type(2) {
        padding-right: 1rem;
    }
    .cont4_box {
        padding-top: 0.6rem;
    }
    .cont5_box {
        padding: 1.6rem 0 0.5rem;
    }
    .cont6_box {
        padding: 0.6rem 0 0.8rem;
    }
    /* 交流合作 */
    .hzlb {
        width: 100%;
        margin-bottom: 0.5rem;
    }
    .hzkstd {
        width: calc(100% - 0rem);
    }
    .hzkstd li .pic {
        width: 4.6rem;
    }
    .hzkstd li .text {
        width: calc(100% - 4.6rem);
    }
    .dbmin {
        padding: 0.3rem 0 0.25rem;
    }
    .dbmin .dblogo {
        width: 3.5rem;
    }
    .dbmin .dbdz {
        margin-left: 1rem;
        width: calc(100% - 4.5rem);
    }
    .dbmin .dbewm {
        margin: auto;
        float: none;
        width: 4.2rem;
        overflow: hidden;
        padding-top: 0.2rem;
    }
    .dbmin .dbewm li {
        margin: 0 0.1rem;
    }
    /* 列表页 */
    .list_banner .lmmc {
        bottom: 0.15rem;
    }
    .list_banner .lmmc h2 {
        font-size: 0.28rem;
    }
    .list_banner .lmmc h1 {
        font-size: 0.34rem;
        margin-top: -0.22rem;
        margin-bottom: 0.1rem;
    }
    .ejdh_box {
        top: 0;
    }

.ejdh_box::before {
    content: "";
    position: absolute;
    background: #550882;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
}
    .ejdh_box .block {
        max-width: inherit;
        overflow: auto;
    }
    .ejdh_box .nr {
        background: none;
        overflow: auto;
        white-space: nowrap;
    }
.ejdh_box .nr::before{
  display:none;
}

    .ejdh_box .nr a {
        margin-right: 0.3rem;
    }
    .list_wkbg {
        margin-top: -0.8rem;
    }
    .list_wkbg2 {
        padding-top: 1.2rem;
    }
    .ltlf {
        width: calc(100% - 0rem);
        margin-bottom: 0.5rem;
    }
    .ltrg {
        width: 100%;
    }
    .lttpxw ul {
        margin: 0 -0.15rem;
    }
    .lttpxw li {
        width: 33.3%;
    }
    .lttpxw li .mar {
        margin: 0 0.15rem;
    }
    .contt_sxp li {
        width: 100%;
        margin: 0.1rem 0;
    }
    .contt_sxp li.prev a,
    .contt_sxp li.next a {
        padding-left: 0.6rem;
        padding-right: 0rem;
    }
    .contt_sxp li.next a {
        text-align: left;
    }
    .contt_sxp li.next a::before {
        left: 0;
        transform: rotate(0deg);
    }
}

@media screen and (max-width:850px) {
    .body_home .banner {
        height: 48.4375vw;
    }
.list_gltd li {
        width: 100%;
    }
}

@media screen and (max-width:700px) {
    .list_tp li {
        width: 50%;
    }
}

@media screen and (max-width:600px) {
    /* 行业新闻 */
    .hytj li {
        width: 100%;
    }
    /* 科学研究 */
    .kexue li {
        width: 100%;
    }
    .cont4_box::before,
    .cont4_box::after {
        display: none;
    }
    .kexue ul:nth-of-type(1) {
        padding-left: 0rem;
    }
    .kexue ul:nth-of-type(2) {
        padding-right: 0rem;
    }
    .kexue {
        padding-top: 0.4rem;
        padding-left: 0;
    }
    .cont5_box {
        padding-top: 1.8rem;
    }
    /* 友情链接 */
    .yqlj {
        padding: 0.16rem 0 0.3rem;
    }
    .yqlj .nr {
        width: calc(100% - 0rem);
    }
    .yqlj .nr .lb {
        width: 31.3%;
    }
    .yqlj .nr .lb:nth-of-type(1) {
        margin-left: 0;
    }
    .dbmin .dblogo {
        float: none;
        margin: auto;
    }
    .dbmin .dbdz {
        margin-left: 0;
        width: calc(100% - 0rem);
    }
    .dbmin .dbewm {
        width: 3.3rem;
        width: 1.1rem;
    }
    .dbmin .dbewm li {
        width: 0.9rem;
    }
    .dbmin .dbewm li span img {
        width: 0.9rem;
        height: 0.9rem;
    }
    /* 列表 */
    .ltwz li a {
        position: relative;
    }
    .ltwz li .time {
        display: none;
    }
    .ltwz li .text {
        width: calc(100% - 0rem);
    }
    .ltwz li .text h2 {
        line-height: 0.5rem;
        height: 0.5rem;
    }
    .ltwz li .text span {
        display: block;
        font-family: Arial;
        font-size: 0.14rem;
        font-weight: normal;
        line-height: 0.34rem;
        color: #9E9E9E;
        background: url(../images/icon_time.png) no-repeat left;
        padding-left: 0.22rem;
        background-size: auto 0.13rem;
    }
    .ltwz li .more {
        margin-top: 0;
        position: absolute;
        bottom: 0.2rem;
        right: 0.2rem;
    }
    .ltwz li:hover {
        background: #fff;
    }
    .ltwz li:hover .time {
        display: none;
    }
    .ltwz li:hover .text h2 {
        color: #333;
    }
    .ltwz li:hover .more {
        border: #d7d7e7 1px solid;
        color: #791cb5;
        background: #fff;
    }
    /* 新闻列表 */
    .xwlb li:hover .mar {
        background: none;
    }
    .xwlb li .pic {
        width: 100%;
        margin-bottom: 0.15rem;
    }
    .xwlb li .text {
        width: calc(100% - 0rem);
    }
    .xwlb li .time {
        display: none;
    }
    .xwlb li .text b {
        float: left;
        display: block;
        font-style: normal;
        font-family: Arial;
        font-size: 0.14rem;
        color: #550882;
        line-height: 0.34rem;
        background: url(../images/icon_time.png) no-repeat left center;
        background-size: auto 0.13rem;
        padding-left: 0.22rem;
    }
    .xwlb li .text span {
        float: right;
        background: url(../images/lt_sjx.png) no-repeat 0.88rem center;
        background-size: auto 0.12rem;
    }
    .xwlb li:hover .text h2 {
        color: #333;
    }
    .xwlb li:hover .text p {
        color: rgba(51, 51, 51, 0.5);
    }
    .xwlb li:hover .text span {
        border: #d7d7e7 1px solid;
        color: #791cb5;
    }
    .xwlb li:hover .text span i {
        background: url(../images/ltjd.png) no-repeat;
        background-size: auto 0.14rem;
    }
    .list_tp li {
        width: 100%;
    }
    .list_tp li .text h2 {
        height: auto;
        max-height: 0.64rem;
    }
    .list_tp li .text p {
        height: auto;
        max-height: 0.84rem;
    }
    .list_tp li:hover .text {
        background: #fff;
    }
    .list_tp li:hover .text h2 {
        color: #333;
    }
    .list_tp li:hover .text p {
        color: #888;
    }
    .list_tp li:hover .text span {
        color: #791CB5;
    }
    .lttpxw li {
        width: 100%;
    }
}

@media screen and (max-width:520px) {
    .yqlj {
        padding-bottom: 0.15rem;
    }
    .yqlj .nr .lb {
        width: 100%;
        margin-left: 0;
        margin-bottom: 0.15rem;
    }
    .hzkstd li {
        height: auto;
    }
    .hzkstd li .text {
        width: calc(100% - 0rem);
        float: right;
        padding-bottom: 1rem;
    }
    .hzkstd li .pic {
        float: left;
    }
    .hzkstd li .pic {
        width: 100%;
        padding-bottom: 61%;
        position: relative;
    }
    .hzkstd li .pic img {
        position: absolute;
        left: 0;
        top: 0;
    }
}

@media screen and (max-width:450px) {
    .body_home .banner .navg {
        right: 60px;
    }
    .body_home .banner .child .fz30 {
        font-size: 16px;
    }
}

@media screen and (max-width:375px) {
    .header .logo {
        width: 180px;
    }
}