鼠标滑过时增加了一点动画效果，当鼠标放在眼睛上的时候，眼睛会闪动几下，CSS3环境下运行，ie8不能运行，感兴趣的朋友可以参考下
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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>
<title>CSS3感应鼠标的背景闪烁和图片缩放动态效果</title>
<meta http-equiv="content-type" content="text/html;charset=gb2312">
<style type="text/css">
/*标题背景*/
h2{background:rgba(0,0,0,0.5);color:#FFF;padding:10px 0;width:300px;text-align:center;transition:opacity 0.5s linear 0s;}
h2:hover{-moz-animation:bg .5s ease-in-out;-webkit-animation:bg .5s ease-in-out;}
h2,a{cursor:pointer;margin:10px auto;}
@-moz-keyframes bg{0%{background:rgba(144,24,53,0.18);}
25%{background:rgba(144,24,53,0.5);}
50%{background:rgba(144,24,53,0.1);}
75%{background:rgba(144,24,53,0.5);}
100%{background:rgba(144,24,53,0.18);}}
@-webkit-keyframes bg{0%{background:rgba(144,24,53,0.18);}
25%{background:rgba(144,24,53,0.5);}
50%{background:rgba(144,24,53,0.1);}
75%{background:rgba(144,24,53,0.3);}
100%{background:rgba(144,24,53,0.18);}}
/*放大镜效果*/
a{display:block;width:50px;height:50px;border-radius:50%;background:#000;transition:opacity 0.2s linear 0s;background:url(http://www.codefans.net/jscss/demoimg/201211/eye.png) no-repeat;}/*就把它当做放大镜吧*/
a:hover{-moz-animation:heart_beat .5s ease-in-out;-webkit-animation:heart_beat .5s ease-in-out;}
@-moz-keyframes heart_beat{0%{-moz-transform:scale(1)}
25%{-moz-transform:scale(1.70)}
50%{-moz-transform:scale(0.9)}
75%{-moz-transform:scale(1.55)}
100%{-moz-transform:scale(1)}}
@-webkit-keyframes heart_beat{0%{-webkit-transform:scale(1)}
25%{-webkit-transform:scale(1.70)}
50%{-webkit-transform:scale(0.9)}
75%{-webkit-transform:scale(1.55)}
100%{-webkit-transform:scale(1)}}
div{width:500px;margin:0 auto;border:solid 1px #ccc;padding:20px;background:rgba(255,255,255,0.5);text-align:center;}
</style>
</head>
<body>
<div>
<h1>鼠标滑过增加一点动画</h1>
<h2>前端工程师的生活</h2>
<a></a>
</div>
</body>
</html>