#position{position:relative;}
#position h1{font-size:36px;margin-top:20px;font-weight:bold;}
#position .img{text-align:center;margin-top:50px;}
#position .img img:hover{-webkit-filter:brightness(1.1);filter:brightness(1.1);}
#position h3{margin-top:40px;background:red;color:white;height:40px;line-height:40px;border-radius:10px;text-align:center;}
#position .intro{width:600px;margin:0 auto;}
#position .intro div{line-height:20px;font-size:15px;margin-top: 0;font-family:"微软雅黑";padding:10px 0;}
#position .intro table{margin:20px 0;}
#position .intro table,tr,td{border:1px solid #ccc;border-collapse:collapse;text-align:center;font-size:14px;}
#position .intro table td.bold{font-weight:bold;line-height:40px;}
#position .intro table td:hover{color:red;}
#product_nav{height:60px;background:black;margin-bottom:40px;}
#product_nav ul li{float:left;width:133.3px;}
#product_nav ul li a{display:block;width:133.3px;height:60px;text-align:center;color:white;line-height:60px;font-size:16px;}
#product_nav ul li a:hover{color:red;}
ul.up{margin-top:30px;margin-bottom:45px;text-align: center;overflow: hidden;width: 383px;}
ul.up li,ul.up li a{font-size: 18px;font-weight: bold;color:#393939;}
ul.up li a:hover{color:#f65050;}
ul.up li{float: left;margin-right: 30px;}