体验效果：
点击这里查看效果
代码如下：
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title>css3图片模糊过滤特效-柯乐义</title>
<style>
.keleyi img{ width:200px; height:200px;}
.keleyi{
list-style: none;
margin: 50px auto; padding: 0;
width: 642px; /* (200+10+4)x3 */
font-size: 0; /* fix inline-block spacing */
}
.keleyi li{
display: inline-block;
*display: inline;
zoom: 1;
width: 200px; height: 150px;
margin: 2px;
border: 5px solid #fff;
-moz-box-shadow: 0 2px 2px rgba(0,0,0,.1);
-webkit-box-shadow: 0 2px 2px rgba(0,0,0,.1);
box-shadow: 0 2px 2px rgba(0,0,0,.1);
-webkit-transition: all .3s ease;
-moz-transition: all .3s ease;
-ms-transition: all .3s ease;
-o-transition: all .3s ease;
transition: all .3s ease;
}
.keleyi:hover li:not(:hover){
-webkit-filter: blur(2px) grayscale(1);
-moz-filter: blur(2px) grayscale(1);
-o-filter: blur(2px) grayscale(1);
-ms-filter: blur(2px) grayscale(1);
filter: blur(2px) grayscale(1);
opacity: .7; /* fallback */
}
</style>
</head>
<body>
<ul class="keleyi">
<li>
<img src="http://keleyi.com/image/a/mdvii14p.jpg"></li>
<li>
<img src="http://keleyi.com/image/a/968oqhtf.jpg"></li>
<li>
<img src="http://keleyi.com/image/a/crgi0c5y.jpg"></li>
</ul>
</body>
</html>
原文：http://keleyi.com/a/bjad/yin8b5eb.htm