Multiple footer widgets misaligned

Hi there

My theme has 3 footer columns for widgets to be placed. When I add only 3 “recent post” widgets to this things work fine, however when I add more than 3 widgets the sections are misaligned as the widget content seems to flow through to the next column and move the next column down.

Here is an example (the widgets should go 1, 2, 3 with 4 being under 1. However, 4 flows through to column 2 and therefore forces 2 & 3 down to the next section. Is there anything that can be done to resize the widgets so that I can have multiple widgets beneath each other in the footer area without them automatically flowing through to the next column

http://www.poppunkguitarlessons.com

Thanks
Rich