1F服饰
2F美妆
3F手机
4F家电
5F数码
6F运动
7F居家
8F母婴
9F食品
10F图书
11F服务
* { margin:0; padding:0; border:none; } ul,li { list-style:none; } #loutiNav { position:fixed; left:40px; top:25%; width:30px; border:1px solid black; } #loutiNav li { border-bottom:1px dashed #ddd; width:28px; height:29px; line-height:29px; text-align:center; font-size:14px; cursor:pointer; position:relative; } #loutiNav li span { display:none; position:absolute; left:0; top:0; width:30px; height:30px; font-size:12px; text-align:center; background-color:darkred; color:white; } #loutiNav li:hover span { display:block; } #loutiNav li span.active { display:block; background-color:white; color:red; } #head,#foot,#main { width:1000px; text-align:center; font-size:40px; margin:0 auto; } #head,#foot { background:green; height:300px; line-height:300px; } #main div { height:500px; line-height:500px; }