Sorry if this has been asked before.

I have installed the Avignon addon template and had it working perfectly on my pc using Chrome.

However, when using different computers and browsers, Firefox, IE 8 and Chrome, they all display the pages differently to how I have set them up.

It can be seen at

I am using zen cart 1.3.9 and only just downloaded the addon from this site.

What do I need to do to get them all looking the same. If I switch back to the classic look everything is the same on every pc.