<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title></title> <style> input{ display: none; } span{ width: 80px; height: 30px; line-height: 30px; border: 1px solid #000; text-align: center; margin-left: -1px; padding: 0 5px; float: left; } input:checked+span{ background: #000; color: #fff; } .content{ width: 200px; height: 200px; border: 1px solid #000; display: none; position: absolute; top: 50px; left: 0; } input:checked~.content{ display: block; } </style> </head> <body> <div class="wrap"> <label> <input type="radio" name="nav" checked/> <span>网站首页</span> <div class="content"> 网站首页的内容 </div> </label> <label> <input type="radio" name="nav" /> <span>公司简介</span> <div class="content"> 公司简介的内容 </div> </label> <label> <input type="radio" name="nav" /> <span>联系我们</span> <div class="content"> 联系我们的内容 </div> </label> <label> <input type="radio" name="nav" /> <span>下载客户端</span> <div class="content"> 下载客户端的内容 </div> </label> </div> </body> </html>