One of my flexbox faves which is very similar to OP: https://flexbox.tech/ https://flexbox.tech/. A useful tool for generating Bootstrap code is https://build.

One of my flexbox faves which is very similar to OP: https://flexbox.tech/ https://flexbox.tech/. A useful tool for generating Bootstrap code is https://build.layoutit.com/ https://build.layoutit.com/ and for CSS grid https://grid.layoutit.com/ https://grid.layoutit.com/. Unfortunately the former is limited to Bootstrap 4, not 5.