How to rename classes in bootstrap grid?

Question

css

It is necessary that the class name be like this .col-md--6 and so on.
The problem is that when I add another one - where necessary in the source code, the gutter disappears between the blocks.
codepen.io/anon/pen/qNboBY
Please help.

Answer 1

Скачать less файл, и перегенерить css - самое простое решение.