*{margin: 0;padding: 0;border: 0;font-family: "微软雅黑"}
body{background: #fff}
ul,li,ol,li{list-style: none;}
a{text-decoration: none;display: block;}
img{width:100%;}
span{display: block;}
/*公共*/
.float{float: left;}
.both{clear: both;}
.head{position: fixed;top: 0}
.foot{position: fixed;bottom: 0}
.advert{width: 100%;text-align: center;color: #fff;background: #e72130;padding: 10px 0;font-size: 18px;font-weight: bold;text-shadow: 3px 1px 1px #421414;}
.click{border-bottom: 2px solid #000;}
/*顶部*/
.header{width: 100%;background: #fff}
.logo{width: 100%}
.nav{text-align: center;background: #000}
.nav span{width:23%;font-size: 18px;text-align: center;display: inline-block;}
.nav span a{display: block;padding: 10px 0;font-weight: bolder;color: #fff}
.active{background: #cd1221;border-bottom: 3px solid #000000;}

/*底部*/
.footer{width: 100%;padding: 5px 0;background: #000;}
.footer span{display: inline-block;width: 33%;text-align: center;font-size: 13px;}
.footer span a{color: #fff;}

/*公司简介*/
.title{width: 100%;text-align: center;}
.advantage{width:100%; text-align:center;background:#fbf3e8;overflow: hidden;margin-top: 20px;}
.advantage_conx{width:100%;display: table;overflow: hidden;}
.advantage_conx span{font-size: 13px}
.conx_list{margin: 2% 0}
.conx_div{margin-top:5px;line-height: 24px;color: #5a5050;text-align: left;width: 70%}
.conx_img{width: 15%;margin: 0 5%;}
.leixing{width: 100%;text-align: center;}
.pro_img{width: 50%;padding: 2% 0}
.case_img{width: 60%;margin: 0 auto}
.case_p{color: #654b4b;margin: 2%;padding: 2%;background: #ccc;font-size: 12px}
.border{width: 92%;padding: 2% 0;margin: 2% auto;}
.contact_us{font-size: 12px;text-align: center;}
.contact_us div p{padding: 1% 0}

/*关于我们*/
.about_title{}
.about_h3{font-size: 20px;line-height: 20px;text-align: center;border-bottom: 1px #ccc solid;padding-bottom: 3%;margin: 3% 0;font-weight: bold;color: #8c6d6d;}
.about_p{width: 80%;margin: 2% auto;font-size: 14px;}

/*联系我们*/
.cantact-title{width: 80%;margin: 0 auto}
.cantact-h3{font-size: 19px;color: #252424;text-align: center;}
.cantact-p{font-size: 14px;color: #252424}

/*产品展示*/
.case-box{width: 90%;margin: 0 auto}
.case-img{width: 40%;margin: 0 auto;display: inline-block;padding: 4%}
.case-p{text-align: center;font-size: 15px}
.case-title{background: #e72130;padding: 2% 5%;}
.case-title p{color: #fff;font-size: 14px;font-weight: bolder;}