I was showing someone the website for The White Hart in Ashbourne that I´d knocked up when I had five minutes spare. Since he uses Firefox and this site uses more CSS than tables for layout, it was displaying the background image in the center where it should have been but the text was on the left side.
Turns out that Firefox does this if you specify text-align: center; in the body´s CSS styling. The easy fix those is to put all the body´s contents in a div and center align that.
I'm a web developer based in the East Midlands, UK and if I keep up the current rate, I might have developed 3 million sites by the time I retire