代码语言：javascript复制
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>113-背景图片定位区域属性</title>
<style>
*{
margin: 0;
padding: 0;
}
ul li{
list-style: none;
float: left;
width: 100px;
height: 100px;
text-align: center;
line-height: 100px;
border: 20px dashed #000;
padding: 50px;
margin-left: 20px;
background: url("images/dog.jpg") no-repeat;
}
ul li:nth-child(2){
/*
告诉系统背景图片从什么区域开始显示,
默认情况下就是从padding区域开始显示
*/
background-origin: padding-box;
}
ul li:nth-child(3){
background-origin:border-box;
}
ul li:nth-child(4){
background-origin:content-box;
}
</style>
</head>
<body>
<ul>
<li>默认</li>
<li>padding</li>
<li>border</li>
<li>content</li>
</ul>
</body>
</html>
