Bootstrap. How to add bottom margin for mobile screen only?

Answer 1

If you are using Bootstrap 4, you can do it with spacing utilities:

 <div class="mb-4 mb-md-0"></div>

This says:

mb-4: use a bottom margin size of 4 for all screens (xs and up)

mb-md-0: use a bottom margin size of 0 for medium (md) screens and up