Documentation
Below 1024 pixels width there is no button that returns you to the docs home.

For screen widths > 1023 you can click the "3.13.1 Documentation »" button to return to the docs index.

Proposal
When using the docs on a small screen there is no easy way to return to the index as you can see in the below page:

I propose for usability the Python logo returns you to the index, this is generally the web standard.