.contact{width: 100%;font-family: Roboto;}
.contact_photo{width: 100%;height: 900px;position: relative;text-align: center;line-height: 900px;font-size: 30px;background: #f1f1f1;}
.contact_valve_title{position: absolute;height: 140px;width: 320px;left: 0;top:310px;text-align: center;line-height: 140px;background:#b6d4d4 ;font-size: 18px;}

.introduce{width: 100%;padding: 270px 0;}
.introduce_text{margin-left: 300px;}
.introduce_text h3{font-size: 28px;margin-bottom: 20px;}
.introduce_text p{font-size: 16px;letter-spacing: 1px;}

.longdiv{width: 330px;}
.longdiv p{word-wrap:break-word;}
.standard_text_box p{font-size: 14px;line-height: 24px;letter-spacing: 1px;}


.details{height: 700px;width: 100%;font-family: Roboto;}
.details_left{background: #5c5052;width: 50%;float: left;height: 100%;color: #fff;}
.details_left_text{width: 70%;padding-top:200px ;margin: 0 auto;}
.details_right{background: #b6d4d4;width: 50%;float: left;height: 100%;}
.details_right_text{width: 70%;padding-top:200px ;margin: 0 auto;}
.details h5{font-size: 16px;margin-bottom: 20px;}
.details p{font-size: 14px;line-height: 25px;}


/*.layout{width: 90%;height: 100%;float: left;background: url(../images/product/product1/product1.jpg) no-repeat;background-size:cover ;}*/

@media screen and (min-width: 645px) {
.box{display: block;}
.m_box{display: none;}
.m_plane{display: none;}
.standard{height: 700px;width: 100%;font-family: Roboto;}
.standard_left{width: 33.3%;float: left;height: 100%;background: #b6d4d4;color:#000;}
.standard_left1{width: 33.3%;float: left;height: 100%;background: #5c5052;color:#fff;}
.standard_text_box{margin-left: 100px;margin-top: 120px;}
.standard_text_box h5{font-size: 24px;margin-bottom: 50px;letter-spacing: 1px;}
.standard_left .standard_line{width: 200px;margin: 14px 0;height: 1px;background: #000;}
.standard_left1 .standard_line{width: 200px;margin: 14px 0;height: 1px;background: #fff;}
.standard_left .standard_line_bottom{width: 330px;margin: 14px 0;height: 1px;background: #000;}
.standard_left1 .standard_line_bottom{width: 330px;margin: 14px 0;height: 1px;background: #fff;}

.standard_right{width: 66.6%;float: left;letter-spacing: 1px;background: #fff;text-align: center;line-height: 700px;height: 100%;font-size: 30px;}
.layout_list{float: left;width: 20%;}
.layout_list li a{display: block;line-height: 0px;}
.layout_list li img{width: 85%;margin: 5px auto;border: 1px solid #000;}

.layout_img{float:right;width: 78%;overflow: hidden;margin-top: 20px;}
.layout_img img{width: 100%;}
.borRed{border-right :2px solid red;}
}
@media screen and (max-width: 640px) {
.box{margin-top: 64px;}
.standard{width: 100%;font-family: Roboto;}
.standard_left{width:100%;float: left;background: #b6d4d4;color:#000;padding-bottom: 2.5rem;}
.standard_left1{width:100%;float: left;background: #5c5052;color:#fff;padding-bottom: 2.5rem;}
.standard_text_box{margin-left:1.5rem;margin-top: 3rem;}
.standard_text_box h5{font-size: 1.5rem;margin-bottom: 1.5rem;letter-spacing: 1px;}
.standard_left .standard_line{width: 10rem;margin: 0.5rem 0;height: 1px;background: #000;}
.standard_left1 .standard_line{width: 10rem;margin: 0.5rem 0;height: 1px;background: #fff;}
.standard_left .standard_line_bottom{width: 20rem;margin: 0.5rem 0;height: 1px;background: #000;}
.standard_left1 .standard_line_bottom{width: 20rem;margin: 0.5rem 0;height: 1px;background: #fff;}

.standard_right{width: 100%;float: left;letter-spacing: 1px;background: #fff;text-align: center;height: 100%;font-size: 30px;}

.layout_list{float: left;width: 100%;}
.layout_list li{float: left;width: 20%;margin: 0.5rem 0.25rem;}
.layout_list li a{display: block;line-height: 0px;}
.layout_list li img{width: 100%;}

.layout_img{width: 100%;overflow: hidden;}
.layout_img img{width: 95%;margin: 0 auto;}
.borRed{border-bottom :2px solid red;}
}