* { 
 padding: 0; 
 margin: 0; 
 list-style: none; 
 text-decoration: none; 
 } 

html { 
 font-size: 10px; 
 } 

a { 
 color: #232323; 
 } 

.clearfloat:after { 
 display: block; 
 clear: both; 
 content: ""; 
 visibility: hidden; 
 height: 0; 
 } 

.product_banner { 
 width: 100%; 
 height: 290px; 
 background-image: url(../img/product_banner.jpg); 
 background-size: cover; 
 background-position: center; 
 } 

.product_banner .product_wrapper { 
 width: 63%; 
 margin: 0 auto; 
 } 

.product_banner .pr_wrapper_zi { 
 float: left; 
 } 

.product_banner .pr_wrapper_zi h2 { 
 font-size: 3rem; 
 font-weight: normal; 
 color: #fff; 
 margin-top: 5%; 
 } 

.product_banner .pr_wrapper_zi p { 
 padding-top: 3%; 
 font-size: 1.8rem; 
 color: #fff; 
 } 

.product_banner .pr_wrapper_right { 
 margin-top: 5%; 
 margin-right: 20%; 
 float: right; 
 border: 1px solid #cf3535; 
 box-sizing: border-box; 
 padding: 5px; 
 } 

.product_banner .pr_wrapper_right a { 
 display: block; 
 width: 143px; 
 height: 36px; 
 background-color: #cf3535; 
 color: #fff; 
 text-align: center; 
 line-height: 36px; 
 } 

.product_banner .pr_wrapper_right:hover { 
 cursor: pointer; 
 border-color: #b71219; 
 } 

.product_banner .pr_wrapper_right:hover a { 
 color: #fff; 
 background-color: #b71219; 
 } 

.product_title { 
    width: 1380px;
    margin: 0 auto;
    height: 80px;
    box-sizing: border-box;
    margin-bottom: 20px;
    background: #f3f3f3;
    padding: 0 15px;
    border-radius: 3px; 
 } 

.product_title a { 
 display: block; 
 padding: 0 1%; 
 } 

.product_title a:hover { 
 color: #b71219; 
 } 

.product_title a:nth-child(1) { 
 height: 84px; 
 line-height: 84px; 
 font-size: 2.4rem; 
 position: relative; 
 float: left; 
 padding-left: 48px; 
 } 

.product_title a:nth-child(1)::after { 
    content: '';
    display: block;
    width: 25px;
    height: 28px;
    background-image: url(../img/product_icon.jpg);
    background-size: cover;
    position: absolute;
    top: 26px;
    left: 0;
    background-repeat: no-repeat;
 } 

.product_title a:nth-child(2) { 
 float: right; 
 line-height: 40px; 
 text-align: right; 
 font-size: 1.6rem; 
 margin-top: 22px;
 background-color: #cf3535;
 color: #fff;

 } 

.product_cont_img { 
 width: 1380px; 
 margin: 0 auto; 
 display: flex; 
 justify-content: space-between; 
 flex-wrap: wrap; 
 margin-bottom: 30px; 
 } 

.product_cont_img a { 
 display: block; 
 width: 325px; 
 height: auto; 
 overflow: hidden; 
 margin-bottom: 40px;
 } 

.product_cont_img a img { 
 transition: all .5s; 
 width: 100%; 
 overflow: hidden; 
 margin-bottom:-3px;
 } 
.gao{width: 100%; height: auto; overflow: hidden;}
.product_cont_img a .product_img_btn { 
 width: 100%; 
 margin: 0 auto; 
 color: #232323;
 text-align: center; 
 line-height: 50px; 
 font-size: 16px; 
 background-color: #f1f1f1; 
 box-shadow: 0px 1px 3px #cccccc; 
 } 

.product_cont_img a:hover img { 
 transform: scale(1.1); 
 } 

.gray_bcproduct { 
 width: 100%; 
 background-color: #f3f3f3; 
 } 


 .product_banner .product_nav { 
 width: 63%; 
 } 

@media screen and (max-width: 1450px) { 
 .footer_content { 
 width: 1200px; 
 } 
 .footer_content .fo_left { 
 width: 700px; 
 } 
 
 .product_title{width: 1150px;}
 .weixin_logo img { 
 width: 90px; 
 } 


 .product_cont_img { 
 width: 1150px; 
 margin-bottom: 20px; 
 } 
 .product_cont_img a { 
 width: 270px; 
 height: auto; 
 } 

 } 

@media screen and (max-width: 1250px) { 
 .product_nav li { 
 font-size: 1.4rem; 
 } 

 .weixin_logo img { 
 width: 70px; 
 } 

 .product_cont_img { 
 width: 950px; 
 margin-bottom: 0px; 
 margin-top: 50px; 
 } 
 .product_cont_img a { 
 width: 220px; 
 height: 246px; 
 } 
 .product_cont_img a .product_img_btn { 
 bottom: 70px; 
 left: 24px; 
 } 
 .product_title{width: 950px;}
 } 

@media screen and (max-width: 980px) { 

 .weixin_logo img { 
 width: 65px; 
 } 

 .product_cont_img { 
 width: 750px; 
 margin-bottom: 0px; 
 margin-top: 50px; 
 justify-content: flex-start; 
 } 
 .product_cont_img a { 
 width: 240px; 
 height: 246px; 
 margin-right: 15px; 
 } 
 .product_cont_img a .product_img_btn { 
 bottom: 60px; 
 left: 24px; 
 } 
 .product_cont_img a:nth-child(3) { 
 margin-right: 0; 
 } 
 .product_cont_img a:nth-child(6) { 
 margin-right: 0; 
 } 
 .product_title{width: 750px;}
 .product_banner .pr_wrapper_right{margin-top: 0;}
 } 
 .product_banner .pr_wrapper_zi h2{margin-top: 0;}

@media screen and (max-width: 780px) { 
 .product_cont_img { 
 width: 90%; 
 margin-bottom: 0px; 
 margin-top: 50px; 
 justify-content: space-between; 
 } 
  
 .product_cont_img a { 
 margin-right: 0; 
 width: 48%; 
 height: auto; 
 margin-bottom: 5%;
 } 
 .product_cont_img a .product_img_btn { 
 bottom: 30px; 
 left: 24px; 
 position: static;
 width: 100%
 box-shadow：0px 2px 3px #cccccc;
 } 

 .product_banner .product_wrapper { 
 width: 90%; 
 } 
 .product_banner .product_nav { 
 width: 90%; 
 } 
.product_nav { 
 width: 90%; 
 } 
 .product_title{width: 90%}
 .product_banner .pr_wrapper_right{margin-top: 5%;}
  .product_cont_img{margin-top:0}
  .product_title{margin-bottom:0; line-height: 40px; height: 40px; margin: 10px auto;}
  .product_title a:nth-child(1)::after{display: none;}
  .product_title a:nth-child(2){padding: 0 8px; border-radius: 5px;}
  .product_title a:nth-child(1){height: auto;line-height: 40px; padding-left: 0;}
  .product_title a:nth-child(2){margin-top: 5px; line-height: 30px;}

  
 } 

@media screen and (max-width: 500px) { 
 .product_title a:nth-child(1) { 
 padding-left: 0; 
 font-size: 1.6rem;
 } 
 .product_cont_img a .product_img_btn { 
 bottom: 43px; 
 left: 16px; 

 } 
 .product_banner .pr_wrapper_right { 
 margin-top: 0; 
 } 
 .product_title a:nth-child(1)::after { 
 top: 31px; 
 left: -3px; 
 } 
 .product_banner .pr_wrapper_zi h2 { 
 font-size: 2.4rem; 
 } 
 .product_banner .pr_wrapper_zi p { 
 font-size: 1.6rem; 
 } 
 .product_banner .pr_wrapper_right { 
 margin-left: 0; 
 } 
 .product_banner .pr_wrapper_zi h2 { 
 font-size: 2.4rem; 
 } 
 .product_banner .pr_wrapper_zi p { 
 font-size: 1.6rem; 
 line-height: 25px;
 } 
 .product_banner .pr_wrapper_right { 
 margin-left: 0; 
 margin-top: 9%; 
 float: none;

 } 
 .product_banner .pr_wrapper_zi{float: none;}
 .product_cont_img a .product_img_btn{
    line-height: 45px;
}
.product_banner{height: auto; padding-bottom: 15px;}
.product_banner .pr_wrapper_right a{width: 100%;}
.pr_wrapper_right{margin: 0 auto;}
 }

@media screen and (max-width: 375px) { 
 .product_banner .pr_wrapper_zi h2 { 
 font-size: 2rem; 
 } 
 .product_title a:nth-child(1) { 
 padding-left: 20px; 
 } 
 .product_cont_img a { 
 margin-right: 0; 
 width: 48%; 
 } 
 .product_cont_img a .product_img_btn { 
     width: 100%;
 bottom: 43px; 
 left: 16px; 

 } 
 } 

@media screen and (max-width: 530px) { 
 .footer { 
 display: none; 
 } 
 .footer_btm { 
 display: none; 

 } 


 }