结构
<!DOCTYPE html>
<html>
<head>
<title>雪碧图</title>
<meta charset="utf-8">
<link rel="stylesheet" type="text/css" href="00.css">
</head>
<body>
<a href="#" class="aa"></a>
</body>
</html>
外联样式
.aa{
display: block;
width: 42px;
height: 30px;
background-image: url(img/amazon-sprite_.png);
background-position: -10px -339px;
}
.aa:hover{
background-position: -60px -339px;
}
.aa:active{
background-position: -125px -339px;
}
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