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<!DOCTYPE html>
<html>
<head>
<title>CSS Flexible Box Reference File</title>
<link rel="author" title="Ping Huang" href="mailto:phuangce@gmail.com" />
<style type="text/css">
#container {
position: absolute;
top: 100px;
left: 10px;
width: 200px;
height: 300px;
}
.box {
width: 100px;
height: 100px;
background-color: green;
}
#box1 {
margin: 50px 0;
}
#box2 {
margin: 100px 0;
}
</style>
</head>
<body>
<p>The test passes if there are two green boxes and no red.</p>
<div id="container">
<div id="box1" class="box"></div>
<div id="box2" class="box"></div>
</div>
</body>
</html>