Cross Domain CSS

We are building a new project for a client and they want us to use their WP template (the new project is not in WP).   So we were just calling their CSS files and generating the templates that way.   We are getting the errors:

XMLHttpRequest cannot load No 'Access-Control-Allow-Origin' header is present on the requested resource. Origin '' is therefore not allowed access.

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What sort of changes have to be made on the WP side to allow us to call those?
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Dave BaldwinFixer of ProblemsCommented:
An 'Access-Control-Allow-Origin' header has to be generated by the server.  An easier method is to just copy the CSS files to your project.
digitalwiseAuthor Commented:
The client really wants us to pull from them so that if they make changes they don't have to remember to tell us to pull a new version.   Do you have some guidance on how to do that with WP?
Jason C. LevineDon't talk to me.Commented:
It's not a WordPress's a server security issue to prevent XSS attacks.
Dave BaldwinFixer of ProblemsCommented:
As I said, this is done by the server, not by the WP code.

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