CSS file in Facebook app being served up as text/html

[Ian Evans]

I'm hosting a Facebook canvas app on my server and a CSS file is not 
getting loaded because it's apparently being served up as text/html and 
not text/css.

I have no problems with the css files on my web site hosted on the same 
server and my nginx conf has the standard mime types file loaded in the 
conf.

Not sure why calling it in a facebook iframe is causing the error. 
Here's the dump from Live HTTP Headers:

GET /myappname/multifriend.css HTTP/1.1
Host: www.example.com
User-Agent: Mozilla/5.0 (Windows NT 6.1; WOW64; rv:6.0.2) Gecko/20100101 
Firefox/6.0.2
Accept: text/css,*/*;q=0.1
Accept-Language: en-gb,en;q=0.5
Accept-Encoding: gzip, deflate
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
Connection: keep-alive
Referer: https://www.example.com/myappname/invite3.php


HTTP/1.1 200 OK
Date: Fri, 23 Sep 2011 06:28:49 GMT
Content-Type: text/html
Transfer-Encoding: chunked
Connection: keep-alive
X-Powered-By: PHP/5.3.6

Thanks!