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 ...

This repository will change the rendering of forms in formio.js so that it uses html and classes compatible with Bootstrap 3 and Bootstrap 4 framework. Important As of 2 September 2025, the main ...