CSS features does Flying Saucer currently support?
Flying Saucer supports all of CSS 2.1 with a few exceptions. Consult the issue tracker for more information on what is not supported (in particular, the issues with a summary of “Support …”) or ask on the mailing list. If you do encounter a compliance bug or other unexpected behavior, please open a bug or post to the mailing list. Our goal is 100% compliance with the CSS 2.1 specification.