Style on http://www.marijuana.com is controlled by a css page. The css page controls (among other things) font size. One of the pages on the site is the privacy page. You can't get to privacy from the main menu, but the footer on each page has a link to it.
On the computer I'm using right now, and every other computer except one to the best of my knowledge, the font sizes on all the pages are exactly as specified in the css page. On one computer that I am aware of, the font size on all the pages except the privacy page are also as specified. On that one computer, the font size of the privacy page, and ONLY the privacy page, is a size or two larger.
That other computer has a Toshiba monitor, and uses Windows XP. I have no idea whether those facts are relevant, but I suppose we have to begin somewhere.
One last item: Folks here may ask me more questions about that other computer, or to try this or that, and I'll be happy to, but I have access to that other computer only on weekends.