I have course notes that I also project during class to show portions as slides. These are sections that consist of bullet points and graphics. I enlarge those sections while viewing with the browser using cntl+shift++. I would like to find a way to make the html document truly dual purpose by having larger-font slides mixed with ordinary more dense handout material, without having to zoom. It would also be nice to be able to navigate quickly to these special portions of the html document. Ideas welcomed.
Philosophically I've always found that dual-use documents, as I used to do using LaTeX with special styles, especially easy to maintain over years of use and updating. When I maintain a separate slide deck I always forgot to update one or the other of slides and notes.