效果体验：http://hovertree.com/texiao/css3/10/
一般做图片切换效果，都会使用JS或者jQuery脚本，今天发现，其实只用CSS也可以实现。试试效果吧。
效果图：
代码如下：
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>纯CSS3实现全屏背景切换焦点图效果 - 何问起</title>
<link rel="stylesheet" type="text/css" href="http://hovertree.com/texiao/css3/10/css/style.css" rel="external nofollow" media="all" />
</head>
<body>
<div class="slider">
<ul class="clearfix">
<li><a href="http://hovertree.com/texiao/css3/10/#bg1" rel="external nofollow" >图片切换1</a></li>
<li><a href="http://hovertree.com/texiao/css3/10/#bg2" rel="external nofollow" >图片切换2</a></li>
<li><a href="http://hovertree.com/texiao/css3/10/#bg3" rel="external nofollow" >图片切换3</a></li>
<li><a href="http://hovertree.com/texiao/css3/10/#bg4" rel="external nofollow" >图片切换4</a></li>
<li><a href="http://hovertree.com/texiao/css3/10/#bg5" rel="external nofollow" >图片切换5</a></li>
</ul>
</div>
<div class="hovertreecontent">
<h1>何问起 纯CSS3实现全屏背景切换焦点图效果</h1>
<a href="http://hovertree.com/h/bjaf/8c5uhche.htm" rel="external nofollow" rel="external nofollow" target="_blank">原文</a> <a href="http://hovertree.com/" rel="external nofollow" target="_blank">首页</a> <a href="http://hovertree.com/texiao/" rel="external nofollow" target="_blank">特效</a>
</div>
<img src="http://hovertree.com/texiao/css3/10/images/bg1.jpg" alt="美图" class="bg slideLeft" id="bg1" />
<img src="http://hovertree.com/texiao/css3/10/images/bg2.jpg" alt="美图" class="bg slideBottom" id="bg2" />
<img src="http://hovertree.com/texiao/css3/10/images/bg3.jpg" alt="美图" class="bg zoomIn" id="bg3" />
<img src="http://hovertree.com/texiao/css3/10/images/bg4.jpg" alt="美图" class="bg zoomOut" id="bg4" />
<img src="http://hovertree.com/texiao/css3/10/images/bg5.jpg" alt="美图" class="bg rotate" id="bg5" /></body>
</html>
