frontend-syntax-css-grid-subgrid
Installation
SKILL.md
Frontend Syntax CSS Grid + Subgrid
This skill defines the CSS Grid layout surface and the rule for picking Grid versus Flexbox, and for picking subgrid versus a nested grid. CSS Grid is Baseline Widely Available since October 2017; subgrid is Baseline Widely Available since September 2023. The skill builds on [[frontend-core-architecture]] (style layer) and [[frontend-core-web-standards-baseline]] (Baseline gating).
Sources: MDN: CSS grid layout (verified 2026-05-19), MDN: Subgrid (verified 2026-05-19), MDN: grid-template-areas (verified 2026-05-19), W3C: CSS Grid Layout Module Level 2 (verified 2026-05-19).