enable custom CSS for ePub #199
Description
reference bug from Asciidoctor that hinted at this path: asciidoctor/asciidoctor-epub3#67
which in turn references some ebook howto articles:
- http://epubsecrets.com/media-queries-in-epubs.php
- https://medium.com/@sandersk/responsive-ebook-design-a-primer-8bba01328219#7be5
mechanism in question is:
- adding the epub3.css and epub3-css3-only.css files to the project (for example in a directory styles)/
- including them in the document with :epub3-stylesdir: styles