How to remove last element padding on flex?

Question

Flexbox

How was the indentation removed before, with adaptive layout, from flex?
These are
easy to do on grids, of course, but how to do it on flexes

Answer 1

on flex, if you give the elements a width of 30% and justify-content: space-between the indents will also be automatic.
But when it was done on floats, then through the nth-child(3n+3) pseudo-class, the right margin was reset to zero in this case for every third