This should help reduce the amount of overlap there is between the source code
and the scroll bar that the browser shows if a source block isn't wide enough.
- The main navigation bar now shows up on every page.
- For consistency the index page now has up/home links that both point to
itself.
- The “up” link doesn't include a space that gets styled anymore.
Trying to redo the way I build my site so that it's simpler to maintain, and one
thing that was getting in my way was that ‘lessc’ isn't packaged for Guix. Sass
on the other hand is, so I've switched.
