<style>
.box{
width: 500px;
height: 500px;
border: 30px solid rgba(0,0,255,0.3);
padding:30px;
background:url(images/baby0.jpg) no-repeat;
/* 设置背景原点*/
background-origin: border-box;
/* 背景裁剪*/
/* border-box :从 border-box开始裁剪
padding-box :从 padding-box开始裁剪
content-box :从 content-box开始裁剪
*/
background-clip:content-box;
}
</style>
</head>
<body>
<div class="box"></div>
</body>
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