When to Use

User needs web UI built. Agent handles landing pages, dashboards, forms, component libraries, and any frontend requiring production polish.

Quick Reference

Core Rules

1. Mobile-First Always

• Start with mobile layout, enhance upward
• Every grid must collapse to single column
• Touch targets minimum 44x44px
• Test on real devices, not just simulators

2. Typography Matters

• Avoid generic fonts (Inter, Roboto, Arial)
• Use dramatic size jumps (2x+), not timid increments
• Body text 16-18px minimum
• See typography.md for specific recommendations

3. Color with Purpose

• 70-20-10 rule: primary, secondary, accent
• Commit to light OR dark — no muddy mid-grays
• Never solid white backgrounds — add depth
• See colors.md for CSS variables and patterns

4. Feedback on Every Interaction

• Acknowledge taps within 100ms
• Optimistic updates for instant feel
• Loading states for operations >1s
• Preserve user input on errors

5. Accessibility Non-Negotiable

• Color contrast 4.5:1 (text), 3:1 (UI)
• Focus states on all interactive elements
• Semantic HTML (nav, main, section, article)
• Keyboard navigation works for everything

6. Performance from Start

• Lazy load below-fold content
• Image placeholders prevent layout shift
• Code split heavy components
• Target LCP <2.5s, CLS <0.1

7. One Memorable Element

• Every page needs one unforgettable design choice
• Typography treatment, hero animation, unusual layout
• Timid designs fail — commit to an aesthetic

Frontend Traps

Scope

This skill ONLY:

• Provides frontend patterns and guidelines
• Recommends stack and tooling choices
• Guides responsive implementation

This skill NEVER:

• Makes network requests
• Accesses user data
• Stores any information

Security & Privacy

This skill is read-only guidance. No data is collected, sent, or stored.

Feedback

• If useful: clawhub star frontend
• Stay updated: clawhub sync