<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>\作业</title>
<link rel="stylesheet" type="text/css" href="../答辩项目/css/bth.css">
</head>
<body>
<a href="#" class="btn"></a>
</body>
</html>
*{
margin :0;
padding: 0;
}
.btn{
display: block;
width: 42px;
height: 30px;
}
.btn:link{
background-position: -10px -340px;
background-image: url(../img/amazon-sprite_.png)
}
.btn:hover{
background-position: -60px -340px;
background-image: url(../img/amazon-sprite_.png)
}
.btn:active{
background-position: -130px -340px;
background-image: url(../img/amazon-sprite_.png)
}
