div height: 50px;
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<html>
<head>
<title>margin</title>
<style type='text/css'>
body {
margin: 10px;
padding: 0;
}
div div {
width: 50px;
height: 50px;
background: rgb(218, 220, 243);
border: 1px solid rgb(154, 157, 203);
text-align: left;
}
div#left {
text-align: left;
}
div#center {
text-align: center;
}
div#right {
text-align: right;
}
</style>
</head>
<body>
<div id='left'>asdf
<div>asdf</div>
</div>
<div id='center'>asdf
<div>asdf</div>
</div>
<div id='right'>asdf
<div>asdf</div>
</div>
</body>
</html>