Attached is a very simple ePub book that displays the following sentence in regular, italic, bold, and bold italic styles:
Quote:
|
Αυτή η πρόταση μεταφράστηκε από την Αγγλική στην Ελληνική από το Google Translate.
|
If you can change the font in this book but not in other ePub books then the problem is with the other books, probably the publisher is overriding the user-selected font with an embedded or generic font.
If you can't change the font in this book, then something else is going on.