html
html
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<!DOCTYPE html>
<html>
<head>
<title>Page Title</title>
</head>
<body>
<style>
#container {
width: 200px;
height: 200px;
background: green;
position: relative;
}
#box {
width: 50px;
height: 50px;
background: red;
position: absolute;
}
</style>
<div id="container">
<div id="box"> </div>
</div>
</body>
</html>
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css
css
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body {
}
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js
js
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