Gap on four sides of grid

Iam trying to give gap between all four sides of inner container but not able to do so.kindly help.
pen is

Give the .row container a padding of 10px

                padding: 10px

hi, thanks but why grid-gap not working.
and how i can fix it with grid gap?

grid-gap adds gaps between grid items. You wanted gap between grid items and their container i.e. padding.

Yes Thats working thanks.