changed intro text, a little longer, but more clear
rearranged the intro bits (which aren't in a great place anyway, but
it's ok for now)
adjusted lists and paragraphs to be nice centered and modest width
headers now good for full-width divs, but need to still handle better
within smaller divs
adjusted some space in comments, undid the paragraph centering for
comments
adjusted indention for nice header positions in all cases