differences between sphinxdoc.css and basic.css from sphinx installation directory and https://matplotlib.org/sampledoc/

[bertarends]

There are important differences between sphinxdoc.css and basic.css from sphinx installation directory and https://matplotlib.org/sampledoc/
With the css from the installation directory the hrefs in the sitebar are not working.
So I replaced the css from the installation directory with the css that I copied from https://matplotlib.org/sampledoc/_static dir website.
You have to place them in the ....\site-packages\sphinx... installation directory because with every rebuild of your documentation the css is copied from there to your build directory!