As far as I know there is no way to add a border to an element via the bootstrap-studio
user interface. The only way you can do it is either through css
or adding the boostrap
border class: https://getbootstrap.com/docs/4.1/utilities/borders/
So I am adding e.g. border-dark
to Class Names, which doesn't work for me:
The solution was to add next to border-dark
for the color also the direction e.g. border-left
border-right
border-top
border-bottom