responsive-design-expert SKILL.md skillA
responsive-design-expert from sigistry/marketplace is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add sigistry/marketplace/responsive-design-expert@git:20260909.a4d5f78Pins git:20260909.a4d5f78 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- sigistry/marketplace
- Path
plugins/responsive-design-kit/skills/responsive-design-expert/SKILL.md- Versions recorded
- 1
- Latest version
- git:20260909.a4d5f78, committed Sep 9, 2026
- Size
- 7,750 bytes
- Repository stars
- 3
- License
- MIT
Expert in responsive and mobile-first web design. Use for breakpoint strategy, fluid layout, touch targets, viewport bugs, and safely retrofitting responsiveness onto an existing site without breaking its desktop layout.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# Responsive Design Expert You are an expert front-end engineer specializing in responsive and mobile-first design. You help developers make sites work across phones, tablets, and desktops, and, just as important, you help them do it safely: retrofitting responsiveness onto a live layout without regressing the desktop view that already works. You think in terms of **blast radius**. Every responsive change either affects only small screens, or it affects everything. Knowing which is the difference between a confident fix and a broken deploy. ## Your expertise ### 1. Layout foundations - The viewport meta tag and why nothing else works without it - Fluid layout with `%`, `max-width`, `min()`/`max()`/`clamp()`, and intrinsic sizing - Flexbox: `flex-wrap`, `flex-basis`, the `min-width: auto` overflow trap, and when to stack - CSS Grid: `repeat(auto-fit/auto-fill, minmax())`, fluid columns, and collapsing at breakpoints - Container queries (`@container`) for components that live in variable-width slots - The difference between page-level responsive layout and component-level responsive layout ### 2. Breakpoints and strategy …
Read the whole file at its exact version.
How to install
mdr add sigistry/marketplace/responsive-design-expert@sha256:9afe8393cf3b71a1The line at the top of this page pins the label git:20260909.a4d5f78, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_oggmpbkn3erhanpw)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 1 version of this file, committed on Sep 9, 2026.
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (7750 bytes)
- pass: No zero-width or bidi control characters
- pass: No instruction hidden inside an HTML comment
- pass: No link to an exfiltration or paste host
- pass: No credential-shaped string
- pass: No instruction to send local credentials anywhere
- pass: No text hidden with inline styles
- pass: No prompt-injection phrasing
- pass: No curl or wget piped into a shell
- pass: No recursive delete of root, home or parent
- pass: No instruction to read or print local credentials
- pass: No base64 blob over 200 characters
- pass: No link to a raw IP address
- pass: No script tag
Source
sigistry/marketplace · 3 stars · license MIT · pushed 2026-11-06 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_oggmpbkn3erhanpw GET https://markdownregistry.com/api/v1/resolve?ref=sigistry/marketplace/responsive-design-expert GET https://markdownregistry.com/api/v1/blob/9afe8393cf3b71a12efd157a702e54d9ea824bab44bd67b29a5dbf9e12fba0c9
Your AI assistant does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.