*{margin:0px;padding:0px;}
body{width:100%;height:auto;min-height:310px;font-family:微软雅黑; font-size:16px; background-color:#f6f6f6;}
.product_div{width:900px;padding:40px; font:微软雅黑;font-size:16px; margin:auto;overflow:auto;border:solid 1px lightgray;margin-top:20px;background-color:white;}
.right_div{width:900px; height:auto; min-height:300px; line-height:30px;}


.li1{width:900px; height:40px; font-family:微软雅黑; font-size:28px; text-align:center;}
.li2{width:900px; height:40px;margin-bottom:20px; color:#333333; text-align:center; border-bottom:dashed 1px #cccccc;}
.li3{width:900px; color:#333333; line-height:40px;margin-top:10px;font-size:18px;}