Table of contents/Summary fixed on top right corner of screen

[Gu-Pa]

Feature Request

Is your feature request related to a problem or unsupported use case? Please describe.
When I scroll down a document, I no longer have access to the table of contents.

Describe the solution you'd like
I would like the table of contents in Docs to be fixed, meaning that it always appears at the top right of the screen and not at the top right of the document, so that when you scroll down, the table of contents is always visible at the top right of the screen.

Describe alternatives you've considered
None