The grid-gap property defines the size of the gap between the rows and columns in a grid layout, and is a shorthand property for the following properties:
grid-row-gap
grid-column-gap
CSS Syntax
grid-gap: grid-row-gap grid-column-gap;
Property Values:
grid-row-gap: It sets the size of the gap between the rows in a grid layout. Its default value is 0.
grid-column-gap: It sets the size of the gap between the columns in a grid layout. Its default value is 0.