body,html{text-align:center;}
#container{position:relative;padding:0px;text-align:left;text-indent:2em;
width: 90%; /* 设定宽度才能显示出居中的效果。*/ 
margin: 0 auto; /* 在Firefox及Opera等浏览器内居中。*/ }
a{color:#00c;}
#l{background:url(main.gif) no-repeat center top;height:52px;margin:35px 0;}
#n{no-repeat center top;height:5px;margin:20px 0;text-align:center}
#m{no-repeat center top;height:5px;margin:20px 0;text-align:center}
ul{padding:0; margin:0; list-style:inside decimal;}
.links {
width: 500px;
text-align: center;
margin: 0 auto;
}
.links li {
float: left;
list-style-type: none;
margin: 8px;
}
.links a:link, .links a:visited{ 
text-decoration: none;
color: green;
}
.links a:hover {
color: blue;
}