作业

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>雪碧图作业</title>
    <style>
        .p1{
            height: 45px;
            width: 120px;
        }
        .box1{

            background-image: url(雪碧图.png);
            height:45px; 
            width:120px; 
            margin: auto;
        }
        .box1:hover{
            height: 38px;
            width: 111px;
            background-position: -10px -48px; 
        }
        .box1:active{
            height: 30px;
            width: 96px;
            background-position: -10px -88px;
        }
        .p2{
            height: 30px;
            width: 42px;
        }
        .box2{

            height: 30px;
            width: 42px;
            background-image: url(雪碧图.png);
            background-position: -59px -339px;
        }
        .box2:hover{
            height: 30px;
            width:40px;
            background-position: -130px -336px;
        }
        .box2:active{
            height: 33px;
            width:42px;
            background-position: -7px -335px;
        }

    </style>
</head>
<body>
    <div class="p1">
        <div class="box1"></div>
    </div>
</body>
</html>

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>雪碧图作业</title>
    <style type="text/css">
        .p1{
            height: 30px;
            width: 42px;
        }
        .box1{

            height: 30px;
            width: 42px;
            background-image: url(雪碧图.png);
            background-position: -59px -339px;
        }
        .box1:hover{
            height: 30px;
            width:40px;
            background-position: -130px -336px;
        }
        .box1:active{
            height: 33px;
            width:42px;
            background-position: -7px -335px;
        }
    </style>
</head>
<body>
    <div class="p1">
        <div class="box1"></div>
    </div>
</body>
</html>