<!DOCTYPE html>
<div style="float: left; width: 50px; height: 20px; background: green;"></div>
<div style="float: left; clear: left; width: 100px; height: 50px; background: green;"></div>
<div style="display: inline-block;"><ruby style="-webkit-ruby-position: under;">base<rt>annotation</rt></ruby></div>
</div>
