CSS not being rendered (9 replies)

I have activated the latest version of Wampserver and I have followed all the rules to create virtual hosts. Unfortunately, when I choose a virtual host and then choose the page to be viewed from the list, I find the CSS code is not operating. However, if I add localhost to the url in front of the virtual host name, everything works as it should. If I once again remove localhost from the url the same problem occurs. How do I get CSS to work without adding localhost to the url (something that we are advised not to do).
Thanks for a solution
Alan