I have a 300x250 ad at the bottom of the second (content) column. That particular ad is messing with the entire page and throwing it off. It looks absolutely HORRIBLE. I inspected the element, and here is what it shows:

<ins id="aswift_1_anchor" style="display:block;border:none;height:90px;margin:0;padding:0;position:relative;visibility:visible;width:980px;background-color:transparent">

980 pixels wide? I don't know how to remedy this except to remove the Google ad.