Default (64rem max-inline-size)

This block-layout is the default width — comfortable for most article and documentation pages.

Narrow (40rem)

For long-form reading. The measure stays around 65 characters per line, which is the comfortable upper bound for sustained reading.

Wide (80rem)

For dashboards and grids that need horizontal real estate.

Full (no cap)

Fills the entire container.

On raised surface

Same measure, raised background.