.grid enable a minimal grid system with auto-layout columns.
Columns intentionally collapses below large devices
To go further, discover how to merge Pico with the Bootstrap grid system.
More about grids
As Pico focuses on native HTML elements, we kept this grid system very minimalist.
A complete grid system in flexbox, with all the ordering, offsetting and, breakpoints utilities, can be heavier than the total size of the Pico library. Not really in the Pico spirit.
Alternatively, you can learn about CSS Grid.