docx to epub: sans-serif recognised, then not recognised
I'm working on a book that's mostly set in serif font (Book Antiqua, 10pt), with some passages set in sans-serif (Helvetica, 9.5pt) to spotlight them.
When I view the epub it in Calibre's reader, all looks as it should; but in iBooks, the sans-serif falls over half way through; i.e. it's fine in the first half, but later on, identically formatted (sans-serif) text is rendered as serif!
Any one know why this is happening? Or how I can fix this?!
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