Gap

Vertical space measured in the system’s squares.

Space between related sections

One square separates a title from its details; two squares mark the next section.

One square of space

The gap separates two lines by one 20px square.

Use unit for one square and double for two. The size attribute also selects a scale token, for example size="05" for half a square or size="2" for two squares.

A gap is empty space. It does not wrap content and is not a flexbox gap between children.

Styling and tokens · Row