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JustineDevsJustineDevs/premortem/.agents/skills/responsive-design/SKILL.md

responsive-design

Skill2 starsChanged 5 months agoApache-2.0View on GitHub

Implement modern responsive layouts using container queries, fluid typography, CSS Grid, and mobile-first breakpoint strategies. Use when building adaptive interfaces, implementing fluid layouts, or creating component-level responsive behavior.

31 other projects use a version of this, 6 of them edited.

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Projects with it also use visual-hierarchy, web-component-design and 8 more.

Other files people use alongside this one.

Files found in the same public projects as a version of this one, more often than they turn up anywhere else. Each project counts once, large collections count for less, and this file's own repository is left out.
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  • Aver005Skill

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    Master React, Vue, and Svelte component patterns including CSS-in-JS, composition strategies, and reusable component architecture. Use when building UI component libraries, designing component APIs, or implementing frontend design systems.

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  • CodeWithBehnamSkill

    accessibility-compliance

    Implement WCAG 2.2 compliant interfaces with mobile accessibility, inclusive design patterns, and assistive technology support. Use when auditing accessibility, implementing ARIA patterns, building for screen readers, or ensuring inclusive user experiences.

    Also in 3 projects that use this

  • CodeWithBehnamSkill

    visual-design-foundations

    Apply typography, color theory, spacing systems, and iconography principles to create cohesive visual designs. Use when establishing design tokens, building style guides, or improving visual hierarchy and consistency.

    Also in 3 projects that use this

  • wpankSkill

    design-system-patterns

    Foundational design system architecture — token hierarchies, theming infrastructure, token pipelines, and governance. Use when creating design tokens, implementing theme switching, setting up Style Dictionary, or establishing multi-brand theming. Triggers on design tokens, theme provider, Style Dictionary, token pipeline, multi-brand theming, CSS custom properties architecture.

    Also in 3 projects that use this

  • rastianSkill

    interaction-design

    Apply interaction design (IxD) principles and frameworks to product and service design work. Use this skill when designing or evaluating interaction flows, micro-interactions, feedback mechanisms, affordances, mental models, component states, response time, animation and transitions, error recovery, input validation, task flows, or navigation patterns. Core audiences: product designers, UX designers, UI designers, service designers, and interaction designers working on digital products and services. Trigger on: interaction flow, micro-interaction, affordance, feedback design, state design (hover/focus/error/loading/empty), response time, transition, animation, mental model, task flow, user flow, navigation design, interaction spec, handoff annotation, gesture, input validation, error state, loading state, empty state, system feedback, signifier, design review, interaction audit, IxD principles.

    Also in 3 projects that use this

The file

We split this skill into the rules it gives an agent

4 rules. 0 are common, 4 are distinctive, and 0 are very specific to this project.

  • 0

    Common

    Most of the 26 edited versions we read keep these.

  • 4

    Distinctive

    This author's own choices. Worth a look.

  • 0

    Very specific

    Tied to their project's names, files or tools. Probably skip.

  • Common
  • Distinctive
  • Very specific
  1. Distinctive:

    Mobile-First: Start with mobile styles, enhance for larger screens

    line 27
  2. Distinctive:

    Fluid Over Fixed: Use fluid values for typography and spacing

    line 29
  3. Distinctive:

    Container Queries: Use for component-level responsiveness

    line 30
  4. Distinctive:

    Logical Properties: Use inline/block for internationalization

    line 34

“Common” is measured: kept by at least 6 in 10 of the 26 edited versions of this file we could read. “Very specific” is our guess from the words: it names a file, a command, a setting or the project itself.

Keep what fits and drop the rest. Your version, ready for your agents.
Files
SKILL.md

Responsive Design

Master modern responsive design techniques to create interfaces that adapt seamlessly across all screen sizes and device contexts.

When to Use This Skill

  • Implementing mobile-first responsive layouts
  • Using container queries for component-based responsiveness
  • Creating fluid typography and spacing scales
  • Building complex layouts with CSS Grid and Flexbox
  • Designing breakpoint strategies for design systems
  • Implementing responsive images and media
  • Creating adaptive navigation patterns
  • Building responsive tables and data displays

Detailed patterns and worked examples

Detailed pattern documentation lives in references/details.md. Read that file when the navigation tier above is insufficient.

Best Practices

  1. Mobile-First: Start with mobile styles, enhance for larger screens
  2. Content Breakpoints: Set breakpoints based on content, not devices
  3. Fluid Over Fixed: Use fluid values for typography and spacing
  4. Container Queries: Use for component-level responsiveness
  5. Test Real Devices: Simulators don't catch all issues
  6. Performance: Optimize images, lazy load off-screen content
  7. Touch Targets: Maintain 44x44px minimum on mobile
  8. Logical Properties: Use inline/block for internationalization

Common Issues

  • Horizontal Overflow: Content breaking out of viewport
  • Fixed Widths: Using px instead of relative units
  • Viewport Height: 100vh issues on mobile browsers
  • Font Size: Text too small on mobile
  • Touch Targets: Buttons too small to tap accurately
  • Aspect Ratio: Images squishing or stretching
  • Z-Index Stacking: Overlays breaking on different screens

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