Nokogiri scraper

require 'rubygems'
require 'nokogiri'
require 'open-uri'

page = Nokogiri::HTML(open("http://v-tac.eu/led-lights/lights1/led-spotlights/led-spotlight-7w-gu10-smd-white-plastic-white-detail.html"))
puts page.class   # => Nokogiri::HTML::Document

fields = page.css(".product-field-type-S")
fields.each do |field|
  key = field.css(".product-fields-title").text
  value = field.css(".product-field-display").text
  puts "#{key}: #{value}"
end

I tried it out but it seems to return the same mess. I don't know why but I begin to suspect that it has something to do with special characters used in some .product-field-display fields like "<" and "/". If you don't mind please have a look at my output.

If it works for you there might be something wrong with my setting and I would like to find out what it is.