Skill

/mobile-first-design

Designs responsive interfaces starting from mobile screens with progressive enhancement for larger devices. Use when building responsive websites, optimizing for mobile users, or implementing adaptive layouts.

One skill from claude-skills.

shell

$ npx -y skills add secondsky/claude-skills --skill mobile-first-design --agent claude-code

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Slash command/mobile-first-design

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Designs responsive interfaces starting from mobile screens with progressive enhancement for larger devices. Use when building responsive websites, optimizing for mobile users, or implementing adaptive layouts.

Stats

Stars194

Forks29

LanguageTypeScript

LicenseMIT

Ships with claude-skills

SKILL.md

mobile-first-design.SKILL.md

---
name: mobile-first-design
description: Designs responsive interfaces starting from mobile screens with progressive enhancement for larger devices. Use when building responsive websites, optimizing for mobile users, or implementing adaptive layouts.
license: MIT
---

# Mobile-First Design

Design interfaces starting with mobile as the foundation, then enhance for larger screens.

## Breakpoints

| Name | Width | Devices |
|------|-------|---------|
| Mobile | 320-480px | iPhone SE, small Android |
| Tablet | 481-768px | iPad mini |
| Desktop | 769-1024px | iPad Pro, laptops |
| Large | 1025px+ | Desktop monitors |

## Mobile-First CSS

```css
/* Base styles (mobile) */
.container {
  padding: 1rem;
}

.nav {
  display: none; /* Hidden on mobile */
}

.nav-toggle {
  display: block; /* Hamburger visible */
}

/* Tablet and up */
@media (min-width: 768px) {
  .container {
    padding: 2rem;
    max-width: 720px;