Our template installs a default theme (as a Ruby gem) called ‘Classic’. This theme includes a set of stylesheets for four output formats: the web (
web.css), ebooks (
epub.css), print PDF (
print-pdf.css) and screen PDF (
You can override anything in the default theme:
- by editing the template stylesheets for each book in its
- by adding your own alternative files to
To see the parent styles and files you’re overriding, browse the Classic theme repo.
For more detail, see the official Jekyll guidance on themes.