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name: responsive-web-design description: > Create responsive layouts using CSS Grid, Flexbox, media queries, and mobile-first design. Use when building adaptive interfaces that work across all devices.

Responsive Web Design

Table of Contents

• Overview
• When to Use
• Quick Start
• Reference Guides
• Best Practices

Overview

Build mobile-first responsive interfaces using modern CSS techniques including Flexbox, Grid, and media queries to create adaptable user experiences.

When to Use

• Multi-device applications
• Mobile-first development
• Accessible layouts
• Flexible UI systems
• Cross-browser compatibility

Quick Start

Minimal working example:

/* Mobile styles (default) */
.container {
  display: flex;
  flex-direction: column;
  padding: 16px;
  gap: 16px;
}

.card {
  padding: 16px;
  border-radius: 8px;
  background: white;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
}

/* Tablet (640px and up) */
@media (min-width: 640px) {
  .container {
    flex-direction: row;
// ... (see reference guides for full implementation)

Reference Guides

Detailed implementations in the references/ directory:

Guide	Contents
Mobile-First Media Query Strategy	Mobile-First Media Query Strategy
Flexbox Responsive Navigation	Flexbox Responsive Navigation
CSS Grid Responsive Layout	CSS Grid Responsive Layout
Responsive Typography	Responsive Typography
Responsive Cards Component	Responsive Cards Component

Best Practices

✅ DO

• Follow established patterns and conventions
• Write clean, maintainable code
• Add appropriate documentation
• Test thoroughly before deploying

❌ DON'T

• Skip testing or validation
• Ignore error handling
• Hard-code configuration values