<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>div重叠 叠加实例 未排层叠顺序 www.divcss5.com</title>
<style>
.div-relative {position: absolute;color: #000;border: 1px solid #000;width: 500px;height: 400px;right: 0;bottom: 0;}
.div-a {position: absolute;left: 30px;top: 30px;background: #F00;width: 200px;height: 100px}
.div-b {position: absolute;left: 50px;top: 60px;background: #FF0;width: 400px;height: 200px}
.div-c {position: absolute;left: 80px;top: 80px;background: #00F;width: 300px;height: 300px;}
</style>
</head>
<body>
<div class="div-relative">
<div class="div-a">我背景为红色</div>
<div class="div-b">我背景为黄色</div>
<div class="div-c">我背景为蓝色</div>
</div>
</body>
</html>
