body{margin:0 auto;padding:0;font-family:microsoft yahei,segoe
ui,tahoma,arial,verdana,sans-serif;font-size:12px;color:#666;background:#fff;}
.top{background-color:black; width:100%;height:80px;margin:0 auto;padding:0;}
.center{width:960px;margin:0 auto;position:relative;}
.center ul{display:block;position:absolute;right:0;top:0;font-size:0;}
.center ul li{display:inline-block;zoom:1;*display:inline;width:135px;height:78px;
background:url(jyt/nav_ico.png) no-repeat;}
.center ul li.home{border-left:none;background-position:10px o}
.center ul li.about{background-position:10px -78px}
.center ul li.service{background-position:10px -156px}
.center ul li.cases{background-position:10px -234px}
.center ul li.client{border-right:none;background-position:10px -312px}
.center ul li.contact{border-right:onne;background-position:10px -376px}
.center ul li a{display:block;height:40px;padding-left:40px;margin:20px 5px 0 5px;
font-size:14px;color:#fff;text-decoration:none;}
.center ul li a:hover{text-decoration:none;}
.center ul li span{display:block;color:#999;font-size:11px;-webkit-text-size-adjust:none;}
ul li {list-style-type:none;}