Poliastro: Documentation CSS messed up by Jupyter stuff

[astrojuanlu]

Compare:

https://docs.poliastro.space/en/latest/

with:

https://docs.poliastro.space/en/stable/

And the culprit seems to be some inline CSS. It can confirmed by adding this line to /etc/hosts/:

127.0.0.1 unpkg.com

[astrojuanlu]

It happens in upstream projects that put JavaScript at the bottom as well:

https://ipyleaflet.readthedocs.io/en/latest/index.html

[astrojuanlu]

Reported upstream at https://github.com/jupyter-widgets/ipywidgets/issues/2311, fingers crossed :crossed_fingers:

[astrojuanlu]

First measure: I pinned html-manager to an older version and see if it fixes the issue

https://github.com/poliastro/poliastro/commit/33c46e5fd3eb5e4816e924e9f2796c02f49665b2

[astrojuanlu]

Fixed.