An underlying system of columns, gutters, and margins that elements align to, turning individual layout decisions into a repeatable structure.
The cards snap to a 12-column grid, so every breakpoint resolves without ad-hoc decisions.
A grid is most visible when it’s broken, which is also its main expressive tool. Establish it strictly, then break it deliberately for emphasis. Layouts that almost align read as sloppier than layouts that never tried.