How to remove padding between blocks in bootstrap?

Question

Bootstrap

Tell me how you can remove the indent between blocks block1 and block1
https://codepen.io/sergey-dragun/pen/eapmJE

Answer 1

If you are talking about an indent between block1 and block3 (a typo in the question), then in order for it not to be block3 must be the content of block1 and not have classes for the grid (col-*). If you need just such a sequence of blocks, then the bootstrap of the third version is not suitable for you.