The important thing is not to stop questioning. Curiosity has its own reason for existence. One cannot help but be in awe when he contemplates the mysteries of eternity, of life, of the marvelous structure of reality. It is enough if one tries merely to comprehend a little of this mystery each day. Never lose a holy curiosity.

Albert Einstein

gap (grid-gap)

The gap CSS property sets the gaps (gutters) between rows and columns. It is a shorthand for row-gap and column-gap.
gap css reference