Flex blocks of shares, how to remove the indent from the last blocks in a line?

Question

C++ / C#

Hello.
Made blocks on flex adaptive for the promotions section.
There will be more than one action, so I decided to implement it through blocks.
Applied indents from blocks, how to remove the indent from the last block! and the rest of the latter.
I tried to do it through: nth-child (4n), but even does not work.
Maybe the indentation can somehow be organized without adding an additional div in which the indentation style is margined.
Blocks working example:
https://jsfiddle.net/ad36w0u8/1/

Answer 1

As far as I understand, in GetRandomMassive(), the randommassive[] array is filled with min_ and max_-5 values, although it was assumed that there would be some random numbers.

Answer 2

For such layouts, it would be logical to use grid instead of flex. And the indents are immediately removed.
Well, if you need exactly flex right here, then this is how you can:

Answer 3

.akb:nth-child(4n) .akk {
  margin-right: 0;
}

Answer 4

Here is an option: https://jsfiddle.net/Le63nfc0/2/
https://jsfiddle.net/w4euz5d2/