The gap CSS property sets the gaps (gutters) between rows and columns. It is a shorthand for row-gap and column-gap.
|Initial value||as each of the properties of the shorthand:row-gap: normalcolumn-gap: normal|
|Applies to||multi-column elements, flex containers, grid containers|
Is the width of the gutter separating the grid lines.
Is the width of the gutter separating the grid lines, relative to the dimension of the element.