<head>
<meta charset="UTF-8">
<title>练习三</title>
<style type="text/css">
.box4{
width: 223px;
height: 195px;
/*background-color: yellow;*/
background-image: url(img/bg2.png);
background-position:0px 0px;
}
.box4:hover{
background-position: 0px -200px;
}
.box1{
width: 195px;
height: 195px;
background-image: url(img/bg2.png);
background-position: -222px 0px;
}
.box1:hover{
background-position: -222px -201px;
}
.box2{
width: 205px;
height: 200px;
background-image: url(img/bg2.png);
background-position: -415px 0px;
}
.box2:hover{
background-position: -415px 197px;
}
.box3{
width: 200px;
height: 200px;
background-image: url(img/bg2.png);
background-position: -616px 0px;
}
.box3:hover{
background-position: -616px -195px;
}
</style>
</head>
<body>
<div class="box4"></div>
<div class="box1"></div>
<div class="box2"></div>
<div class="box3"></div>
</body>
</html>
