row-gap and column-gap

The row-gap and column-gap properties set the gutter size between grid and flex tracks independently.

Since CSS3 Spec ↗

Syntax

row-gap: <length|%>;
column-gap: <length|%>;

Examples

.grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  row-gap: 2rem;
  column-gap: 1rem;
}
Output
Renders a four-column grid with wider 2rem vertical gutters and narrower 1rem horizontal gutters.

Notes

These are the longhands of the gap shorthand. row-gap controls spacing between rows; column-gap between columns. They apply to grid, flexbox, and multi-column layouts and never add outer edge spacing.

Browser & runtime support

EnvironmentSince version
chrome 84
firefox 63
safari 14.1
edge 84

See also