rainborick - 3:42 am on Mar 29, 2013 (gmt 0)
It could be better and easier to simply use absolute positioning. It just takes a little extra care in sizing the containing <div> vertically with an appropriate height setting. Something like:
<div style="float:left; margin:5px; position:relative; top:0; left:0; width:20%; height:180px;">
<a style="position:absolute; bottom:0; left:0; display:block; text-align:center;" href="/">Link Text</a>
Obviously, you'll want to change the height:180px; setting depending on what the <div> contains beyond the <a> tag. But this should get you close.