Right hand toc goes out of the page and covers the right nav button

Describe the bug

A few of our docs pages are quite long, and the right hand toc therefore, is also very long. I thought the right right toc would scroll (based on this https://github.com/executablebooks/jupyter-book/pull/176), but it doesn’t in our jupyter-book. It goes off the page, and also ends up covering the next page nav button.

To Reproduce

Steps to reproduce the behavior:

1. Go to https://neuroml.github.io/Documentation/Userdocs/Schemas/Channels.html
2. See right hand toc

Screenshot:

Expected behavior

The right hand toc should scroll.

Our source repo is here: https://github.com/NeuroML/Documentation

Environment

• Python Version [e.g. 3.7.1]: 3.9.2
• Package versions or output of jupyter-book --version:

  $ jupyter-book --version
  Jupyter Book: 0.10.0
  MyST-NB: 0.11.1
  Sphinx Book Theme: 0.0.39
  MyST-Parser: 0.13.3
  Jupyter-Cache: 0.4.2
  NbClient: 0.5.1
  

• Operating System: Fedora Linux (release 33)

Additional context

N/A

[choldgraf]

Oops yep I missed that one - please feel free to open another issue for right toc scrolling!

[choldgraf]

Hmmm - @sanjayankur31 wanna see if this problem goes away when you use the version of the theme in https://github.com/executablebooks/sphinx-book-theme/pull/311 ?