#c273586 ul {list-style: none; margin: 0px; padding: 0px;} 
    #c273586 ul li a {font-family: "Microsoft YaHei", 微软雅黑;text-decoration: none;color:#fff; display:block; width:112px; height:36px; line-height:36px; text-align:center;  font-size:16px;} 
    #c273586 ul li { float:left; margin-left:0px;} 
    #c273586>ul>li>a:hover {background-image:url(images/yiliaodashujuyingyongjishu-guojiagongchengshiyanshi1_03.png); background-size:100% 100%;height: 57px;margin-top: -7px;line-height:57px;}
    #c273586 ul li a#current {background-image:url(images/yiliaodashujuyingyongjishu-guojiagongchengshiyanshi1_03.png); background-size:100% 100%; color:#fff; height: 57px;margin-top: -7px;line-height:57px;}
    #c273586 ul li ul { border:0px solid #ccc; display:none;} 
    #c273586 ul li ul li {font-size:14px; float:none;}
 
    #c273586 ul li ul li a:hover { background-color: unset; color:#000000;}  
    #c273586 ul li:hover ul { display:block;z-index:9999999; position:absolute;}
    #c273586 ul li.sfhover ul { display:block;}
    
 #c273586 ul li {
    margin-left: 0px;
    margin-right: 3px;
    font-size: 18px;}
   #c273586>ul>li>a {
    color: white;
    font-family: "微软雅黑";
    line-height: 50px;
    width: 145px;
    font-size: 18px;
    height: 50px;}
.main_conDiv table{margin:0 auto;}
.main_conDiv a{color:blue;}