responsive-design

responsive-design is a skill for Claude Code, Codex from Kahtaf/OpenCandle. It costs 40 tokens per session (397 once invoked), scanned A, original, MIT.

A guide to building interfaces that adapt to different screen sizes and component spaces. It covers mobile-first layouts, flexible text and spacing, grids, and responsive images.

In plain words
What is it for?
It helps create adaptive navigation, tables, dashboards, component layouts, image behavior, breakpoints, and touch-friendly controls.
Why use it?
It reduces layout problems when the same interface must work across phones, tablets, desktops, or differently sized components.

Skill for Claude CodeCodex

Written for no agent in particular: nothing here depends on one. Also seen: installed under .agents/ (shared by several agents).

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add skills/kahtaf/opencandle/responsive-design
Any agent
npx skills add Kahtaf/OpenCandle --skill responsive-design
Clone the repo
git clone --depth 1 https://github.com/Kahtaf/OpenCandle

Made for: Claude Code, Codex.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for responsive-design

README.md
[![agentmods](https://agentmods.dev/badge/skills/kahtaf/opencandle/responsive-design.svg)](https://agentmods.dev/skills/kahtaf/opencandle/responsive-design)
Your own site
<a href="https://agentmods.dev/skills/kahtaf/opencandle/responsive-design"><img src="https://agentmods.dev/badge/skills/kahtaf/opencandle/responsive-design.svg" alt="Measured on agentmods" height="20"></a>
Per session 40 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 397 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5.1 $0.00040 $0.00397
Opus 5 $0.00020 $0.00198
Sonnet 5 $0.00008 $0.00079
Haiku 4.5 $0.00004 $0.00040

Measured 6d ago against content hash c8bd56f8fc0f, method: parsed. Prices are Anthropic first-party input rates as of 2026-09-05, from the pricing page.

Security

Grade A, and why

responsive-design scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 6d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

Origin

Copies of this mod

3 near-identical copies found in the catalogue:

.agents/skills/responsive-design/SKILL.md · 45 lines

What it actually says

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
Files

What ships with it

4 files beside SKILL.md in the same directory: the scripts, references and assets a skill reads on demand. Not counted in the per-session cost; read them before you install if any of them is executable.

Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 6d ago First seen · 45 lines · 40 tokens per session scan A c8bd56f8fc0f

Subscribe to this mod's changes

responsive-design is a skill published in the GitHub repository Kahtaf/OpenCandle (22 stars, last pushed 2d ago), licensed MIT. It adds 40 tokens to every session and 397 once invoked, about $0.0002 per session on Opus 5. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.

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