css-grid-math

CSS Grid Math

Use this skill when a grid needs to be reasoned about as a coordinate and sizing system. It helps calculate where items land, how tracks divide space, and why flexible tracks do not always produce expected widths.

Quick Start

1. Read guidelines.md to select the smallest relevant file set.
2. Load references/grid-layout/rules.md for implementation decisions.
3. Load references/grid-layout/examples.md when editing code.
4. Use workflows/debug-grid-layout.md for multi-step derivation or debugging.

Contents

| Resource | Purpose |

|----------|---------|

| guidelines.md | Routes tasks to the right reference files |

| references/source-map.md | Book source and chapter/section traceability |

| references/grid-layout/knowledge.md | Core concepts and terminology |

| references/grid-layout/rules.md | Practical rules, guidelines, and exceptions |

| references/grid-layout/examples.md | Bad/good examples and refactoring approach |

| references/grid-layout/patterns.md | Reusable formula and implementation patterns |

| references/grid-layout/checklist.md | Review checklist and red flags |

| workflows/debug-grid-layout.md | Step-by-step workflow |

Source

Derived from Math for Web Design by Paul McFedries, Chapter 4: CSS Grid math.

Citations are tracked in references/source-map.md.