DIV CSS列形导航一例，超酷解析！

如图 动机:

先看看XHTML代码：

<div id="navcontainer"> <p><ul id="navlist"> </P><p><li id="active">Item one </P><p><ul id="subnavlist"> </P><p><li id="subactive">Subitem one</li> </P><p><li>Subitem two</li> </P><div class="tj_content hidden-xs"><table width=600 border=0 cellspacing=0 cellpadding=2 align=center class=title14><tr align=center><td><a href="http://www.zhujiangroad.com/mobile/news/2020/11m82257.html" target=_blank > 苹果公司为何屡屡成功？以摄像头升级为例，看苹果独特的组织结构 </a></td><td><a href="http://www.zhujiangroad.com/edu/soft/69737.html" target=_blank > Win系统中怎样使用U盘分区 </a></td></tr> <tr align=center><td><a href="http://www.zhujiangroad.com/mobile/news/2020/3a17444.html" target=_blank > 三分钟讲清楚，到底需不需要换5G手机？ </a></td><td><a href="http://www.zhujiangroad.com/game/news/2022/1m84437.html" target=_blank > 王者荣耀也搞大数据“杀熟”？ </a></td></tr></table></div><p><li>Subitem three</li> </P><p><li>Subitem four</li> </P><p></ul> </P><p></li> </P><p><li>Item two</li> </P><div class="tj_content hidden-xs"><table width=600 border=0 cellspacing=0 cellpadding=2 align=center class=title14><tr align=center><td><a href="http://www.zhujiangroad.com/mobile/news/2023/3m87351.html" target=_blank > 手机行业普及大内存？“APP刺客”立大功 </a></td><td><a href="http://www.zhujiangroad.com/edu/soft/69372.html" target=_blank > Windows7的十大最佳功能你知道吗？ </a></td></tr> <tr align=center><td><a href="http://www.zhujiangroad.com/dc/news/2013/3a16139.html" target=_blank > 资深街头摄影师关于街拍的21个建议 </a></td><td><a href="http://www.zhujiangroad.com/mobile/news/2020/10a17481.html" target=_blank > 选购手机时这些容易忽略的小细节也很重要 </a></td></tr></table></div><p><li>Item three</li> </P><p><li>Item four</li> </P><p></ul> </P></div>

看看CSS是如何定久 有关元素的：

#navcontainer { margin-left: 30px; } <p>#navcontainer ul </P><div class="tj_content hidden-xs"><table width=600 border=0 cellspacing=0 cellpadding=2 align=center class=title14><tr align=center><td><a href="http://www.zhujiangroad.com/web/news/2022/1m84459.html" target=_blank > 快递为何“送不上门”？难点在哪？ </a></td><td><a href="http://www.zhujiangroad.com/game/news/2021/6m83464.html" target=_blank > EA《战地2042》支持128名玩家作战：凑不够必须安排人机 </a></td></tr> <tr align=center><td><a href="http://www.zhujiangroad.com/Video/news/2023/7m87949.html" target=_blank > 好莱坞式“正确”在中国走到尽头 </a></td><td><a href="http://www.zhujiangroad.com/hardware/news/2023/7m87879.html" target=_blank > 装电脑也有风水？可别花冤枉钱了 </a></td></tr></table></div><p>{ </P><p>margin: 0; </P><p>padding: 0; </P><p>list-style-type: none; </P><p>font-family: verdana, arial, Helvetica, sans-serif; </P><p>} </P><p>#navcontainer li { margin: 0; } </P><p>#navcontainer a </P><p>{ </P><p>display: block; </P><p>padding: 5px 10px; </P><p>width: 140px; </P><p>color: #000; </P><p>background-color: #ADC1AD; </P><p>text-decoration: none; </P><p>border-top: 1px solid #fff; </P><p>border-left: 1px solid #fff; </P><p>border-bottom: 1px solid #333; </P><p>border-right: 1px solid #333; </P><p>font-weight: bold; </P><p>font-size: .8em; </P><p>background-image: url(images/vertical06.jpg); </P><p>background-repeat: no-repeat; </P><p>background-position: 0 0; </P><p>} </P><p>#navcontainer a:hover </P><p>{ </P><p>color: #000; </P><p>background-color: #889E88; </P><p>text-decoration: none; </P><p>border-top: 1px solid #333; </P><p>border-left: 1px solid #333; </P><p>border-bottom: 1px solid #fff; </P><p>border-right: 1px solid #fff; </P><p>background-image: url(images/vertical06a.jpg); </P><p>background-repeat: no-repeat; </P><p>background-position: 0 0; </P><p>} </P><p>#navcontainer ul ul li { margin: 0; } </P><p>#navcontainer ul ul a </P><p>{ </P><p>display: block; </P><p>padding: 5px 5px 5px 30px; </P><p>width: 125px; </P><p>color: #000; </P><p>background-color: #C5D8C5; </P><p>text-decoration: none; </P><p>font-weight: normal; </P><p>} </P><p>#navcontainer ul ul a:hover </P><p>{ </P><p>color: #000; </P><p>background-color: #889E88; </P><p>text-decoration: none; </P>}