点击按钮区域，按钮大小不变的情况下，扩大热点区域的方法，不支持iee8。

<!doctype html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>扩大热点区域的方法，不支持iee8</title>

    <style type="text/css">
        .test{width: 100px; height: 100px; border:10px dotted #000000; margin: 50px auto; padding:50px; }
        .t1{background: url("images/cake.png") center; background-clip:border-box;}
        .t2{background: url("images/cake.png") center; background-clip:padding-box;}
        .t3{background: url("images/cake.png") center; background-clip:content-box;}
    </style>
</head>
<body>
    <div class="test t1"></div>
    <div class="test t2"></div>
    <div class="test t3"></div>
</body>
</html>

转载于:https://www.cnblogs.com/shimily/articles/10882906.html