直接上图(原网址),还有步骤想详解视频。自己CSS3练习demo。
【demo】
【HTML】
<div class="tree"> <ul> <li> <a href="#">parent</a> <ul> <li> <a href="#">child</a> <ul> <li> <a href="#">Grant child</a> </li> </ul> </li> <li> <a href="#">child</a> <ul> <li><a href="#">Grant child</a></li> <li> <a href="#">Grant child</a> <ul> <li><a href="#">Great Grant child</a></li> <li><a href="#">Great Grant child</a></li> <li><a href="#">Great Grant child</a></li> </ul> </li> <li><a href="#">Grant child</a></li> </ul> </li> </ul> </li> </ul> </div>
【CSS3】
*{ margin:0; padding:0;}.tree ul{ padding-top:20px; position: relative; webkit-transition: all 0.5s; -moz-transition: all 0.5s; transition:all .3s;}.tree li{ float:left; list-style: none; text-align: center; position: relative; padding:20px 5px 0 5px; webkit-transition: all 0.5s; -moz-transition: all 0.5s; transition:all .3s;}/*利用::before,::after作分支线*/.tree li::before,.tree li::after{ content:""; position: absolute; top:0; right:50%; width:50%; height:20px; border-top:1px solid #ccc;}.tree li:after{ right:auto; left:50%; border-left:1px solid #ccc;}.tree li:first-child::before,.tree li:last-child::after{ border:0 none;}.tree li:last-child::before{ border-right:1px solid #ccc; -webkit-border-radius: 0 10px 0 0; -moz-border-radius: 0 10px 0 0; border-radius: 0 10px 0 0;}.tree li:first-child::after{ -webkit-border-radius: 10px 0 0 0; -moz-border-radius: 10px 0 0 0; border-radius: 10px 0 0 0;}
/*删除仅只有一个分支的分支线*/.tree li:only-child::before,.tree li:only-child::after{ border:none;}.tree li:only-child{ padding-top:0;}
/*添加仅只有一个分支的下分支线*/.tree ul ul::before{ content:""; position: absolute; top:0; left:50%; border-left:1px solid #ccc; width:0; height:20px;}.tree a{ display: inline-block; border:1px solid #ccc; padding: 5px 10px; color:#666; text-decoration: none; padding:10px; -webkit-border-radius: 5px; -moz-border-radius: 5px; border-radius: 5px; webkit-transition: all 0.5s; -moz-transition: all 0.5s; transition:all .3s;}
/*添加选中状态*/.tree li a:hover,.tree li a:hover+ul li a{ background-color: #c8e4f8; color: #000; border: 1px solid #94a0b4;}.tree li a:hover+ul li:after,.tree li a:hover+ul li:before,.tree li a:hover+ul::before,.tree li a:hover+ul ul::before{ border-color: #94a0b4;}
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