Feature Proposal: Create updated CSS sheet for EPUB export
This ticket is one aspect of #254, which is being broken out into more granular development tickets to make prioritizing the next development steps easier.
The CSS file that the PS EPUB component uses for Editoria EPUB export should be rebuilt with updated selectors that work with Editoria's output HTML. The new sheet should use an existing CSS sheet (probably a UCP EPUB stylesheet).
The new CSS should be built with the likely upcoming changes to Editoria's output HTML in mind, including:
- Component titles as class names on the HTML element (#258)
- New style elements added to the styling pane in Wax (#259)
- Changes to the structure of the book HTML (#261)
Finally, validating an Editoria-produced EPUB with EPUBCheck throws several errors and warnings related to the CSS (parsing and selector errors) which should be tested against the new sheet once it is complete.
See #254 for more context.