Best Responsive Design Skills for Claude Code: CSS Grid & Flexbox (2026)

Responsive layout is where most AI-generated UIs first break on mobile. tailwind-design-system is the most-installed skill for it at 52,111 installs (skills.sh registry, wshobson/agents).

Key takeaways

• tailwind-design-system leads with 52,111 installs and 36,507 GitHub stars (skills.sh registry, GitHub).
• responsive-design (14,113 installs) focuses specifically on breakpoint strategy and fluid layouts.
• web-design-reviewer (11,763 installs, 34,620 stars) audits rendered layouts against responsive-design standards.
• tailwindcss-advanced-layouts (7,427 installs) covers CSS Grid patterns specifically, beyond basic Flexbox.
• responsive-layout-builder (232 installs) is a lighter-weight alternative for smaller projects.

Why do AI-generated layouts break on mobile?

Agents often generate fixed-width components or skip breakpoint testing entirely, so a layout that looks correct at desktop width overflows or collapses under 768px. responsive-design and web-design-reviewer both target this directly - the former by generating breakpoint-aware markup, the latter by reviewing rendered output against responsive standards after the fact.

What is the best skill for responsive design in Claude Code?

tailwind-design-system leads at 52,111 installs and 36,507 stars (skills.sh registry, GitHub). Install it with:

npx skills add wshobson/agents --skill tailwind-design-system

Strong alternatives: responsive-design (14,113 installs) for breakpoint-specific work, and tailwindcss-advanced-layouts (7,427 installs) when the layout needs CSS Grid rather than Flexbox. See the full design skills shortlist.

When should you reach for CSS Grid instead of Flexbox?

Grid wins for two-dimensional layouts - dashboards, card grids, magazine-style pages - where both row and column alignment matter simultaneously. tailwindcss-advanced-layouts generates Grid-based patterns specifically for this case; Flexbox remains the better default for single-axis component layout (navbars, button groups, form rows).

How do you verify a layout is actually responsive, not just narrow?

Don't trust a visual pass at one viewport width. web-design-reviewer (11,763 installs, 34,620 GitHub stars) checks rendered output against responsive-design standards across breakpoints, catching overflow and collapse issues a single-viewport screenshot misses.

A complete starter stack

• tailwind-design-system - base responsive utility-class system
• responsive-design - breakpoint strategy and fluid layout rules
• tailwindcss-advanced-layouts - CSS Grid patterns for two-dimensional layouts
• web-design-reviewer - post-build responsive audit

Common pitfalls

• Testing only at desktop width and assuming Tailwind's responsive classes handle the rest automatically.
• Reaching for Flexbox on a two-dimensional grid layout, which forces nested wrapper divs Grid avoids.
• Skipping a rendered-output review, so overflow bugs ship even though the source markup "looks" responsive.

Start from a breakpoint-aware skill, not a fixed-width component - then verify with a rendered-output review.

Common questions