HTTP/1.1 200 OK
Content-Type: text/css
Date: Mon, 05 Apr 2010 18:51:26 GMT
Expires: Tue, 05 Apr 2011 18:51:26 GMT
Etag: W/"0"
Last-Modified: Mon, 05 Apr 2010 18:51:26 GMT
Cache-Control: max-age=31536000, public
X-Original-Content-Length: 59

.c1 {
  background-color: blue;
}
.c2 {
  color: yellow;
}