第一个li 怎么跑中间去了是做的跟着老师一步一步

@charset"utf-8";*{ margin:0; padding:0; font-size:12px;}body{ background-color:#f5f5f5;}.top{ width:100%; height:27px; background:url(../images/top_bg.jpg) repeat-x;}.top_content{ width:1000px; margin:0 auto;}.top_content li{ list-style-image:url(../images/li_bg.gif); float:right; width:70px; line-height:27px;}.top_content a:link,.top_content a:visited{ color:#8e8e8e; text-decoration:none;}.top_content a:hover,.top_content a:active{ color:#900; text-decoration:none;}.warp{ width:1000px; margin:0 auto;}.logo{ height:80px; background-color:#fff;}.logo_left{ float:left;}.logo_right{ float:right; width:300px; color:#8e8e8e; line-height:80px;}.logo_right img{ vertical-align:middle; margin-right:10px; }.logo_right .tel{ color:#c00; font-size:23px; font-family:"微软雅黑";}.nav{ height:40px;}.nav_left{ background:url(../images/nav_left.jpg)no-repeat; float:left;}

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