I used the "Add Font Family" button in the Look & Feel section of the Convert Books dialogue to embed a font. It worked, pretty much across the board, with only some CSS in the source code of my ebook, namely these:
body {font-family: Rosario, Serif;}
or the class tags:
.dedication {font-family: Rosario, Serif;}
and the corresponding xhtml:
<div class="dedication">Dedication text</div>
These have worked until today, when suddenly the embed is not translating consistently in iBooks. It still works for both Nook and Kindle for Mac, and on Nook tablet + Nook for iPhone with Publisher Defaults turned on. But my iBooks on iPhone app has gone screwy and ignores the embedded font in alternating sections in the resulting epub.
I've tried everything - adding "!important" to the end of the font-family attribute, adding the CSS to line-level tags, tried to recreate whatever tags I've changed before iBooks stopped using the font properly, nothing.
Is there anything I can do to make iBooks apply the embedded font consistently?
Thanks so much in advance. Calibre rules.