Agent skill · Frontend

responsive-design

Responsive web design patterns, mobile-first CSS, container queries, fluid typography, and accessibility-first layouts

Cosmic Stack3,294★ · 2 repos on radarProfile →
claude-codeMIT
Install
npx skills add cosmicstack-labs/mercury-agent-skills --skill responsive-design --agent claude-code

Same command for any agent — swap --agent for codex, cursor, copilot.

Facts
Files in the skill folder: 1
SKILL.md size: 2 KB
Bundled scripts: none
Version: 1.0.0
Declared author: cosmicstack-labs
Path: categories/frontend/responsive-design/SKILL.md
Open the folder on GitHub →
Where it comes from
Stars: 364
Language: JavaScript
Read our review of the source →

Weekly change comes from our own snapshots, not the repository page — it measures attention, not adoption.

From the SKILL.md

# Responsive Design Modern responsive design patterns using mobile-first methodology, CSS Grid, Flexbox, and container queries. ## Mobile-First Approach ```css /* Base styles = Mobile */ .container { padding: 1rem; display: flex; flex-direction: column; gap: 1rem; } /* Tablet */ @media (min-width: 768px) { .container { flex-direction: row; flex-wrap: wrap; padding: 2rem; } } /* Desktop */ @media (min-width: 1024px) { .container { max-width: 1200px; margin: 0 auto; padding: 3rem; } } ``` ## Container Queries ```css /* Instead of viewport queries, query the container */ .card-container { container-type: inline-size; container-name: card; } @container card (min-width: 400px) { .card { display: grid; grid-template-columns: 200px 1fr; } } @container card (max-width: 399px) { .card { display: flex; flex-direction: column; } } ``` ## Fluid Typography ```css /* Fluid type scale using clamp() */ :root { --text-sm: clamp(0.875rem, 0.8rem + 0.25vw, 1rem); --text-base: clamp(1rem, 0.9rem + 0.5vw, 1.25rem); --text-lg: clamp(1.25rem, 1rem + 1vw, 1.75rem); --text-xl: clamp(1.5rem, 1rem + 2vw, 2.5rem); } ``` --- ## Common Mistakes 1. **Starting with desktop**: Always design mobile-first. It's easi

What's inside
Steps it walks through
  1. Mobile-First Approach
  2. Container Queries
  3. Fluid Typography
  4. Common Mistakes
More from mercury-agent-skills
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About this skill
What does the responsive-design skill do?

Responsive web design patterns, mobile-first CSS, container queries, fluid typography, and accessibility-first layouts

How do I install it?

Run `npx skills add cosmicstack-labs/mercury-agent-skills --skill responsive-design --agent claude-code` — it drops the skill into your project so the agent can pick it up. Swap the --agent value for codex, cursor or copilot if you use one of those.

Where does this skill come from?

From cosmicstack-labs/mercury-agent-skills, a repository with 364 stars. We read it straight from the repository tree rather than a submitted listing, so what you see here is what is actually published.

Is a popular skill a good skill?

Not necessarily. Stars measure attention, not adoption — a repository can trend for a week and be abandoned. That is why we show the weekly change from our own snapshots next to the total, instead of a single flattering number.

Keep going