> I have eventually resumed "work" on this and here is what I got:
> 
> Original:
> https://www.gnu.org/software/emacs/manual/html_node/elisp/Visiting-Functions.html
> 
> Sample:
> https://brandelune.github.io/code/Visiting-Functions.html

Don't you plan to apply similar changes to the built in Info?

Its current styling is pretty bare bones, styling like above could
make it much more pleasant to read:

https://i.imgur.com/9BXFnxi.png