<!DOCTYPE html>
<html>
<head>
<style>
div {
	border: 1px solid black;
	width: 10px;
	height: 10px;
}
</style>
</head>
<body>
<div style="width: 100px; height: 100px;">
    <div style="float: left;"></div>
    <div style="margin-top: 20px;"></div>
    <div style="margin-bottom: 20px;"></div>
    <div style="float: left;"></div>
</div>
</body>
</html>