/* BASIC css start */
 div.intro_header {
     margin: 50px auto;
     text-align: center;
 }

 div.intro_header h3 {
     font-size: 30px;
     font-weight: 500;
 }

 div.intro_header p {
     font-size: 15px;
 }

 ul.intro_tab_list {
     margin-bottom: 30px;
     overflow: hidden
 }

 ul.intro_tab_list li {
     float: left;
     width: calc((100% / 5) - 1px);
     border-left: 1px solid #fff;
 }

 ul.intro_tab_list li:first-child {
     border-left: none;
 }

 ul.intro_tab_list li button {
     width: 100%;
     height: 50px;
     line-height: 50px;
     text-align: center;
     background-color: #bebebe;
 }

 ul.intro_tab_list li button.active {
     background-color: #1a9f58;
     color: #fff;
 }

div.product_wrap {
     display: none;
 }

 div.product_wrap.active {
     display: block;
 }

ul.product_list {
     overflow: hidden;
 }

 ul.product_list li {
     float: left;
 }

 ul.product_list li:before {
     content: '';
     display: inline-block;
     width: 1px;
     height: 10px;
     margin: 0 5px;
     background-color: #bebebe;
 }

 ul.product_list li:first-child:before {
     display: none;
 }

 ul.product_list li button {
     width: 82px;
 }

 ul.product_list li button.active {
     font-weight: 700;
     color: #1a9f58;
 }

 
div.product_header {
     margin-top: 40px;
 }

 div.product_header h3 {
     font-size: 25px;
 }

 div.product_header p {
     font-size: 16px;
 }

 div.product_contents {
     display: none;
 }

 div.product_contents.active {
     display: block;
 }

 @keyframes upDown {
     0% {
         bottom: -18px
     }

     50% {
         bottom: -24px
     }

     100% {
         bottom: -18px
     }
 }

 
.product_desc {
     clear: both;
     width: 1200px;
     margin: 0 auto;
     padding: 40px 0;
     overflow: hidden;
 }

 .product_desc dl.left_box_1,
 .content_w dl.left_box_2,
 .content_w dl.left_box_3,
 .content_w dl.left_box_4,
 .content_w dl.left_box_5 {
     float: left;
     width: 590px;
     height: 195px;
     border: 1px solid #d3d3d3;
     margin-bottom: 18px;
     overflow: hidden;
     padding-top: 25px;
 }

 .product_desc dl.right_box_1,
 .content_w dl.right_box_2,
 .content_w dl.right_box_3,
 .content_w dl.right_box_4,
 .content_w dl.right_box_5 {
     float: right;
     width: 590px;
     height: 195px;
     border: 1px solid #d3d3d3;
     margin-bottom: 18px;
     overflow: hidden;
     padding-top: 25px;
 }

 .product_desc dl dt {
     float: left;
     width: 200px;
     height: 150px;
     padding: 0 0 0 25px;
 }

 .product_desc dl dt img {
     margin: 5px 0;
     border: 1px solid #ddd;
 }

 .product_desc dl dd {
     font-size: 15px;
 }

 .product_desc dl dd img {
     display: none;
     margin-top: 20px;
 }

.mark_view_box {display:flex}
.mark_view_box>img {height:34px}

 
/* BASIC css end */