http-stats:
HTTP/1.1 Content-Style-Type header field

Common Content-Style-Type header values:

Content-Style-Type: text/css

Sample Content-Style-Type web server response:

HTTP/1.1 200 OK
Content-Type: text/html; charset=UTF-8
Content-Length: 1503
Content-Style-Type: text/css
Date: Fri, 30 Jul 2010 17:00:44 +0000

<!DOCTYPE html PUBLIC "-//W3C//DTD ...
...
...

Other common HTTP headers

Other less common headers