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666-css层叠详解.html
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666-css层叠详解.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Document</title>
<style>
div {
position: relative;
width: 100px;
height: 100px;
}
p {
position: absolute;
font-size: 20px;
width: 100px;
height: 100px;
}
.a {
background-color: blue;
z-index: 1;
}
.b {
background-color: green;
z-index: 2;
top: 20px;
left: 20px;
}
.c {
background-color: red;
z-index: 3;
top: -20px;
left: 40px;
}
</style>
</head>
<body>
<div>
<p class="a">a</p>
<p class="b">b</p>
</div>
<div>
<p class="c">c</p>
</div>
</body>
</html>