Mostly for Rob...
As best as I can tell, style_soundwriting.css exists to support one project. I don't believe it makes sense for CSS files that are designed to support a single project to be in the PreTeXt repository.
Does that style have some important features that might make it desirable for a variety of projects to use?
Andrew Scholer (he/him/his)
Computer Science Instructor/Program Chair
Chemeketa Community College