trewren

I found a solution for centering my web pages here from MrMKellow Nov.7, 2012 which worked well except that the text blocks were sliding way down as much as 2000px from TOP. I used negative pixels, a solution I found elsewhere, which worked OK until I tried it in Firefox which rendered the text slightly off vertically. I do not understand the logic of negative pixels. Can somebody point me to the answer to that? Thanks, Jack portfolio.html