以下是 css3折叠式苹果菜单特效代码 的示例演示效果:
部分效果截图:

HTML代码(index.html):
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>css3折叠式苹果菜单</title>
<link rel="stylesheet" title="Default" href="images/css3-accordionMenu.css" type="text/css" media="screen">
</head><body>
<div class="accordionMenu">
<h1>Accordion Menu</h1>
<div id="brand" class="menuSection">
<h2><a href="#brand">Brand</a></h2>
<p>
Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod
 tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim 
veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea 
commodo consequat. Duis aute irure dolor in reprehenderit in voluptate 
velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint 
occaecat cupidatat non proident, sunt in culpa qui officia deserunt 
mollit anim id est laborum.Lorem ipsum dolor sit amet, consectetur 
adipisicing elit, sed do eiusmod tempor incididunt ut labore et dolore 
magna aliqua. Ut enim ad minim veniam, quis nostrud exercitation ullamco
 laboris nisi ut aliquip ex ea commodo consequat. Duis aute irure dolor 
in reprehenderit in voluptate velit esse cillum dolore eu fugiat nulla 
pariatur. Excepteur sint occaecat cupidatat non proident, sunt in culpa 
qui officia deserunt mollit anim id est laborum.
</p>
</div>
<div id="promotion" class="menuSection">
<h2><a href="#promotion">Promotion</a></h2>
<p>
Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod
 tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim 
veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea 
commodo consequat. Duis aute irure dolor in reprehenderit in voluptate 
velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint 
occaecat cupidatat non proident, sunt in culpa qui officia deserunt 
mollit anim id est laborum.
</p>
</div>
<div id="event" class="menuSection">
<h2><a href="#event">Event</a></h2>
<p>
Lorem ipsum dolor sit amet, consectetur adipisicing elit, sed do eiusmod
 tempor incididunt ut labore et dolore magna aliqua. Ut enim ad minim 
veniam, quis nostrud exercitation ullamco laboris nisi ut aliquip ex ea 
commodo consequat. Duis aute irure dolor in reprehenderit in voluptate 
velit esse cillum dolore eu fugiat nulla pariatur. Excepteur sint 
occaecat cupidatat non proident, sunt in culpa qui officia deserunt 
mollit anim id est laborum.
</p>
</div>
</div>
</body>
</html>
CSS代码(css3-accordionMenu.css):
.accordionMenu{font:12px Arial,Verdana,sans-serif;color:#424242;background:#fff;padding:10px;width:500px;margin:0;}
.accordionMenu h1{margin:0;font-size:20px;text-shadow:2px 2px 2px #aeaeae;}
.accordionMenu h2{margin:5px 0;padding:0;}
.accordionMenu h2 a{font-size:13px;display:block;font-weight:normal;color:#424242;text-shadow:2px 2px 2px #aeaeae;text-decoration:none;margin:0;padding:10px 10px;background:#8f8f8f;background:-moz-linear-gradient( top,#cecece,#8f8f8f);/* FF,Flock */
background:-webkit-gradient(linear,left top,left bottom,from(#cecece),to(#8f8f8f));/* Safari,Chrome */
filter:progid:DXImageTransform.Microsoft.gradient(startColorstr=#ffcecece,endColorstr=#ff8f8f8f);/* IE 5.5 - IE 7 */
-ms-filter:"progid:DXImageTransform.Microsoft.gradient(startColorstr=#ffcecece,endColorstr=#f8f8f8f)";/* IE 8 */
-webkit-border-radius:5px;-moz-border-radius:5px;border-radius:5px;}
.accordionMenu:target h2 a,.accordionMenu h2 a:focus,.accordionMenu h2 a:hover,.accordionMenu h2 a:active{background:#2288dd;background:-moz-linear-gradient( top,#6bb2ff,#2288dd);background:-webkit-gradient(linear,left top,left bottom,from(#6bb2ff),to(#2288dd));filter:progid:DXImageTransform.Microsoft.gradient(startColorstr=#ff6bb2ff,endColorstr=#ff2288dd);-ms-filter:"progid:DXImageTransform.Microsoft.gradient(startColorstr=#ff6bb2ff,endColorstr=#ff2288dd)";color:#FFF;}
.accordionMenu p{padding:0 10px;margin:0;height:0;overflow:hidden;-moz-transition:height 0.5s ease-in;-webkit-transition:height 0.5s ease-in;-o-transition:height 0.5s ease-in;transition:height 0.5s ease-in;}
.accordionMenu:target p{overflow:auto;height:100px;}
 
             
        