Why does the same page looks different on different servers?

[jhatter]

Please can someone explain why the same page looks different on different server?

This is the correct appearance:
http://www.untaintedtuscany.com/ut-edits/index-edit.html

This is the same page on a different server:
http://www.johnhathway.co.uk/untainted-tuscany/eng/index-edit.html

[Beverleyh]

the "site.css" file isnt at the location specified in the page on the johnhathway domain, so the styles aren't being applied to the page.