Hi Ralph, thank you for your reply.
The centulator site has no consideration for mobile devices whatsoever, it just scales by itself.
There are stylesheets in the slikkrlabs one to accommodate portrait/landscape orientation but that's all. Even if I remove those and the meta viewport tag I still see no autoscaling when i look at that page on an iPhone. In fact, I had to do a lot of tweaking after throwing down a very basic layout, thinking it would jiust work because the damned thing was spilling outside the viewable area on iPad as well!