I want my screen display to look like this:

Note the menu on the right.
I want my pdf display to look like this:

Menu is not there and text adjusts to fill the page where the menu would have been.
As a newbie, I was challenged, and time was of the essence. I ended up creating a very long snippet so that I could add the content for a single guide to a web-formatted topic and a pdf-formatted topic. The web-formatted topic included this:

The downside of this approach: I can't link into headings in the web page. Is there a better way without switching to top nav?