class Roadie::NetHttpProvider

def find_stylesheet!(url)
  response = download(url)
  if response.kind_of? Net::HTTPSuccess
    Stylesheet.new(url, response_body(response))
  else
    raise CssNotFound.new(url, "Server returned #{response.code}: #{truncate response.body}", self)
  end
rescue Timeout::Error
  raise CssNotFound.new(url, "Timeout", self)
end