thanks css/github.css https://gist.github.com/andyferra/2554919 css/para.png https://raw.githubusercontent.com/gollum/gollum/master/lib/gollum/public/gollum/images/para.png css/dirty-shade.png https://raw.githubusercontent.com/gollum/gollum/master/lib/gollum/public/gollum/images/dirty-shade.png convert idea http://qiita.com/griffin_stewie/items/95026360fdfca1bd8e33 usage ./convert.sh README.md firefox README.html