Hi kovidgoyal,
I just summitted a
Ticket #1287 with the generation of ePUB. It seems any style sheet that has a number as part of the name is not ported over to the final CSS in the ePUB file.
I've attached the original HTML (crated from BookCreator) the final ePUB product and a sample LRF(which does handle the style sheets correctly)
=X=