# Css Core

> Core CSS guidance for architecture, tokens, responsive patterns, and accessibility.

- **Type:** Skill
- **Install:** `agentstack add skill-caraya-agent-skills-css-core`
- **Verified:** Yes — security-reviewed for prompt injection and unsafe behavior
- **Seller:** [caraya](https://agentstack.voostack.com/s/caraya)
- **Installs:** 0
- **Category:** [Agent Skills](https://agentstack.voostack.com/c/agent-skills)
- **Latest version:** 0.1.0
- **License:** MIT
- **Upstream author:** [caraya](https://github.com/caraya)
- **Source:** https://github.com/caraya/agent-skills/tree/main/skills/css-core

## Install

```sh
agentstack add skill-caraya-agent-skills-css-core
```

Requires the [AgentStack CLI](https://agentstack.voostack.com/docs/cli). Works with Claude Code, Cursor, and any MCP-compatible agent.

## About

# CSS Core

Purpose: provide pragmatic, production-ready CSS guidance covering architecture, design tokens, responsive layout patterns, and accessibility-first color usage.

Color guidance:
- Default color space: OKLCH for perceptual uniformity when creating palettes, scales, and gradients.
- For any non-trivial color decisions (accessibility thresholds, palette harmonies, conversions), consult the `color-expert` skill first; follow its recommendation if it contradicts OKLCH.

Architecture:
- Prefer design tokens (CSS custom properties or JSON token files) for color, spacing, type, and radii.
- Use logical properties and container queries where appropriate; keep layout and visual tokens separate from components.
- Pattern examples: component-driven tokens → atomic components → composed pages. Prefer predictable specificity (avoid deep selector chains).

Best practices:
- Use semantic tokens (`--color-text`, `--bg-surface`, `--accent`) rather than raw hex in components.
- Prefer system fonts where performance matters; bundle web fonts asynchronously.
- Respect `prefers-reduced-motion` and `prefers-contrast`.

Accessibility:
- Design around contrast using APCA or WCAG as required by project policy; run automated checks during CI.
- Do not rely on color alone to convey meaning; pair with icons, labels, or patterns.

When to call other skills:
- For color generation/analysis: `color-expert`.
- For accessibility audits: `ui-accessibility` skill.

This SKILL focuses on high-level decision-making rather than low-level syntax examples.

## Source & license

This open-source skill is cataloged on AgentStack and links to its original source — we do not rehost the code.

- **Author:** [caraya](https://github.com/caraya)
- **Source:** [caraya/agent-skills](https://github.com/caraya/agent-skills)
- **License:** MIT

Install and usage instructions live in the source repository linked above.

## Pricing

- **Free** — Free

## Security capabilities

Automated source analysis of v0.1.0 — what this tool can access:

- **Network access:** no
- **Filesystem access:** no
- **Shell / process execution:** no
- **Environment & secrets:** no
- **Dynamic code execution:** no

*"Yes" means the capability is present in the source — more access means more to trust, not that it is unsafe.*


## Versions

- **0.1.0** — security scan: passed — Imported from the upstream source.

## Links

- Listing page: https://agentstack.voostack.com/l/skill-caraya-agent-skills-css-core
- Seller: https://agentstack.voostack.com/s/caraya
- Browse the marketplace: https://agentstack.voostack.com/browse

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Listed on AgentStack — the marketplace for AI agent skills and MCP servers. Every listing is security-reviewed. Creators keep 70%.