Could we do a percentage width of say 25% (so 256px at the lower bound before the sidebar disappears)?

Just to clarify, you mean to have a fixed sidebar width of 256px or some kind of dynamic sizing? The latter would require additional style changes

A width defined in % or vw units, yes.

We might need some more breakpoints for that - 25vw might be too much on very wide screens

And maybe an upper bound where it's a fixed width, compare:

https://pydata-sphinx-theme.readthedocs.io/en/stable/user_guide/index.html

As it stands, this is PR good for mobile, the sidebar is always shown:

I made the sidebar more like the pydata theme Hugo shared. The width is now calculated as min(25vw, 350px) so it is at maximum 350px and at minimum 256px (just before it gets hidden).

As it stands, this is PR good for mobile, the sidebar is always shown:

Fixed, some of the selectors I was using were too specific.

(There's a conflict after merging #219.)

(There's a conflict after merging #219.)

Will fix it in a bit

Thanks!

Thanks for the reviews/comments!