enhancing-progressively
CSS-first approach - use CSS before JavaScript. Use when implementing layouts, animations, or toggles, or when user mentions レイアウト, スタイル, 位置, アニメーション, 表示/非表示, トグル, レスポンシブ, CSS Grid, Flexbox, transforms, transitions, CSSのみ, JavaScript不要, シンプル
Installation
Follow the repository instructions for this skill and your agent. Review the files and dependencies before adding it to your workflow.
View source ↗GuidesSkill instructions
Progressive Enhancement
Priority
| Priority | Approach | Examples |
|---|---|---|
| 1 | HTML | Semantic elements, native inputs |
| 2 | CSS | Grid, Flexbox, :has(), transitions |
| 3 | JS | Only when truly necessary |
Detection
| JS Pattern | CSS Alternative |
|---|---|
element.style.display |
CSS :has(), [open], <dialog> |
addEventListener('resize') |
CSS @media, clamp(), min() |
getBoundingClientRect |
CSS Grid, Flexbox, gap |
setInterval for animation |
CSS transition, @keyframes |
classList.toggle |
CSS :checked, :target |
scrollTo, scrollIntoView |
CSS scroll-behavior: smooth |
matchMedia |
CSS @media, @container |
Examples
Read the usage examples in the source repository.
View source ↗Source history
- Indexed on
- 2026-01-20
- Index updated
- 2026-01-26
- Branch
- main
Index and sync dates describe this directory. View the source repository for code history.
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