Newsletter Stylify Markup

gistfile1.rb

#!/usr/bin/env ruby -wKU
require "rubygems"
require "nokogiri"

attribs = {
           "h3" => "font-size: 16px; font-weight: bold; margin: 0 0 10px; padding: 0 14px;",
           "p" => "margin: 0 0 8px; padding: 0 12px;",
           "li" => "margin-top:8px;",
           "ul" => "margin: 0 0 8px 1.5em; padding: 0 12px;"
}

doc = STDIN.read

html = Nokogiri::HTML(doc)

attribs.each do |node,style|

html.css(node).each do |e|
  e.set_attribute('style',style)
end

end

puts html