So, I decided to write my own for Bootstrap 5, using all native JavaScript and native Bootstrap markup and CSS - there is no custom styling. I should mention that both the standard and module versions ...

In Bootstrap 5 prior 5.3 there is an issue that the css variables for breakpoints are missing, which was fixed (by me) with version 5.3. Up to version 5.3, you can use the bootstrap-detect-breakpoint ...