摘要：
Css手风琴制作下拉菜单：˂渲染：注意：关键是使用Css选择器和input:check。
css制作手风琴下拉菜单：
<!DOCTYPE html> <html> <head> <meta charset="utf-8"/> <title>html5 UI</title> <link rel="stylesheet"href="css/normalize.css"/> <!--[if lt IE 9]> <script src="http://html5shiv.googlecode.com/svn/trunk/html5.js"></script> <![endif]--> </head> <style>#box{width:80%;margin:15px auto; }article{display:none;width:100%;height:0;border:1px solid #cccccc;box-shadow:1px 2px 3px #cccc8f;text-align:center;; transition:all 0.2s ease;-moz-transition:all 0.2s ease;-webkit-transition:all 0.2s ease; } input{display:none; }label{display:block;background-color:#b3d4fc;text-align:center;border:1px solid #cccccc;cursor:pointer;}input#o:checked~.one{height:55px;display:block; }input#t:checked~.two{height:55px;display:block;}input#h:checked~.three{height:55px;display:block;} </style> <body> <div id="box"> <section> <input type="radio"checked id="o"name="item"/> <label for="o">first-item1</label> <article class="one">this is item1 content!</article> <input type="radio"id="t"name="item"><label for="t">second-item2</label> <article class="two">this is item2 content!</article> <input type="radio"id="h"name="item"><label for="h">three-item3</label> <article class="three">this is item3 content!</article> </section> </div> </body> </html>
效果图：
注释：关键是css的选择器使用和input：check的使用。