Sidebar overlaps with a menu-bar

[synalice]

Problem

When you resize the sidebar it goes under the menu-bar (the header).

Screencast.from.11.05.2025.13.07.09.webm

Steps

1. Open https://rust-lang.github.io/mdBook/ or https://doc.rust-lang.org/book/.
2. Resize the sidebar and look at where it meets the menu-bar.

Possible Solution(s)

We could make the sidebar be always on top of everything else. This means it would temporarily obscure the menu-bar.

Alternatively, make it so that menu-bar is resized linearly with the sidebar, without the "bounce" animation. With that the menu-bar and sidebar will never overlap.

Notes

No response

Version

The one used for https://rust-lang.github.io/mdBook/ at the time of writing this (a8aee21).

[synalice]

I've deleted these 7 lines and here is the result. This might be a personal preference, but I do like it better this way.

Screencast.from.11.05.2025.13.39.28.webm

[synalice]

Found the same issue at https://cxx.rs/#example:

cxx-bug.mp4