CSS broken…?

Hi, I've finished the website that I've been posting links to for help. I did the changenameservers process so that the domain points to the server properly (it was in a preview mode on the new server before). Now it seems the CSS is broken. http://classicalballetcentresurrey.co.uk/ It looks very broken - I was kind of expecting it. You might need to refresh your browser Sakin, hopefully your internet provider's database has updated with the new server info. Am I right in thinking I just need to alter the directory for the CSS and all the other aspects of the site (images etc) in the PHP files? Any other advise would be great, thank you! :-)