Expected behavior add some classes with ms lg brakepoints and change the behavior of the elements as the screen size change, also make the form borders as pill with border radius 50% or 50px Actual behavior why sometime if I wanted to add a class with some brake points sm lg md it didn’t apply the changes or it is not affected by mdbootstrap. Ex: I want to have my-md-3 and my-sm-5, but it is not affecting only if I set mt-3 works fine.. so I need to use this only on col row containers??? Be cause not always works for me. and for the forms: i'm trying to make my search form border-radius rounded, but i can't find the correct class for mdb or the correct selector to achieve this ... i used the inspector to modify but no result there's something i missing ????