calibre provides several configuration options to customize the way books appear and behave when read within the calibre ebook viewer. One of the options is to use our own style sheet [CSS], to further customize the appearance, from background and text colors to indents and margins.
This sticky will serve as a repository for examples and tips for creating and using your own style sheets.
If you have questions, samples, or other ideas to share, please post them in
the discussion thread.
Jump to posts:
How to use the custom CSS option
Misc tips and troubleshooting
Sample CSS - Begin Here