This is a demo site for PyData, generated as part of Sphinx Themes Gallery.
This sample documentation was generated on Aug 08, 2022, and is rebuilt weekly.
Install this theme:
$ pip install pydata-sphinx-theme
Set the following in your existing Sphinx documentation’s
html_theme = 'pydata_sphinx_theme'
Build your Sphinx documentation with the new theme! 
You can find this theme’s documentation at https://pydata-sphinx-theme.readthedocs.io/en/latest/.
The Kitchen Sink section contains pages that contains basically everything that you can with Sphinx “out-of-the-box”.
Browsing through that section should give you a good idea of how stuff looks in this theme.