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alignment-grid-systems

Use this skill when designing or evaluating a grid system — picking column counts, gutter widths, breakpoints, baseline grids, or modular grids. Trigger when designing a new layout system, when an existing layout feels disorderly, when picking responsive breakpoints, or when reviewing a design that "doesn't sit on a grid." Sub-aspect of `alignment`; read that first.

plugins/HDeibler/universal-design-principles/plugins/perception-and-hierarchy-principles/skills/alignment-grid-systems/SKILL.md

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Nov 6, 2026
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Apache-2.0

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# Grid systems

A grid is the explicit alignment scaffold a design uses. It provides the columns, rows, and gutters that every element snaps to. Most successful design systems share one important trait: they enforce a grid that designers and engineers can both reason about.

## Grid types

### Column grid

The most common type in web design. The page is divided into N equal columns separated by gutters; elements span 1 to N columns.

```css
.layout {
  display: grid;
  grid-template-columns: repeat(12, 1fr);