<body style="height:300px">
<div style="float:left;width:50%;background-color:green;height:100px"></div>
<div style="float:left;width:100px;background-color:purple;height:100px"></div>
<div style="float:right;width:200px;background-color:orange;height:500px"></div>
<div style="float:right;width:100px;background-color:blue;height:50px"></div>
<div style="float:left;width:10em;background-color:red;height:200px"></div>
<div style="float:right;width:100px;background-color:olive;height:100px"></div>