Anonymous

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<title>Title</title>
<style type="text/css">
#container{
    width: 200px;
    height: 200px;
    border: 1px solid red;
}
#insider{
    width: 100px;
    height: 100px;
    border: 1px solid blue;
    float: right;
    margin-right: -50px;
}

</style>
</head>
<body>

<div id="container">
    <div id="insider"></div>
</div>

</body>
</html>