.content_detail{width:900px;margin:0 auto;  min-height:80%;   font-family: "Microsoft YaHei ";font-size: 18px; line-height: 30px;   color: #333;margin-top:40px;  }

.content_title{width:900px;margin:0 auto;  text-align:center;  font-family: "Microsoft YaHei ";font-size: 30px; line-height: 30px;   color: #333;margin-top:40px}
 html, body{ margin:0; height:100%;width:100% }
 
 
 .content_detail_l{width:600px;   float:left;  font-family: "Microsoft YaHei ";font-size: 16px; line-height: 28px;   color: #333;margin-top:40px;  }
  .content_detail_r{width:400px; margin-left:60px;  float:left; margin-top:40px;  }