JavaScript 中 CSS position 定位属性的实际应用示例

<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
<style type="text/css">
img{width:200px;}
</style>
</head>
<body>
<div id="wrap">
<img src="images/DSC_3496.jpg" style="position:absolute;width: 200px;z-index:100">
<img src="images/DSC_3949.jpg" style="position:absolute;width: 300px;">
<img src="images/DSC_3172.jpg" style="width: 400px;position: absolute;">
<img src="images/DSC_3425.jpg" style="width: 500px">
</div>
</body>
</html>