CSS3 的transition属性
<style type="text/css">
a {
color:#000;
font-weight:bold;
font-size:16px;
text-decoration:none;
}
a:hover {
color:#f60;
-webkit-transition:all .5s ease;
-moz-transition:all .5s ease
}
</style>
</head>
<body>
<a href="">afdsfsdfsdfsdf</a>
</body>
</html>