[Jellby]

Originally Posted by jospalau

This is what I have been doing so far. User style tweak like that
i,em {font-family: 'Caslon Antique'; }

It might, in some cases.

It will give weird results if a book has CSS like:

em {
  font-style: normal;
  text-decoration: underline;
}

(you'll see it upright and underlined... but in a different font too.)

or:

div.poetry {
  font-style: italic;
}

(you will see it in italics... but in your normal font, not in Caslon Antique.)