Hmm so inclusion we don't rightly know if its negative or neutral when styling h tags with font size, some good points raised though
G knows this sort of SEO techniques. Keyword stuffing using CSS file for example doesn't work. Better not to try to fool G.
i agree, search engines spiders specially Google are one of the best AI programs, they can check and evaluate site's content, status, etc. They know which is good or spam.
the question we really want to know a bout is whether resizing your text for h1 tags e.g. 2 points lower, will affect you negatively?