astro-styling

Guidance for styling Astro components using scoped CSS, CSS Modules, Tailwind CSS, UnoCSS, Sass, or global styles. Astro is a web framework that uses component files to build websites.

In plain words
What is it for?
Use it when adding or changing styles in .astro files, configuring CSS approaches, using conditional classes, or setting global design styles.
Why use it?
It helps developers choose and apply styling methods correctly, including Astro’s rules for keeping component styles scoped or making them global.

Skill for Claude CodeCodex

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/fusengine/agents/astro-styling
Any agent
npx skills add fusengine/agents --skill astro-styling
Clone the repo
git clone --depth 1 https://github.com/fusengine/agents

Made for: Claude Code, Codex.

Per session 35 Skills are progressive disclosure: only the name and description are preloaded; the body loads when the skill is used.
When invoked 997 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 $0.00035 $0.00997
Opus 5 $0.00017 $0.00498
Sonnet 5 $0.00007 $0.00199
Haiku 4.5 $0.00003 $0.00100

Measured 2d ago against content hash 1c02e397e281, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

astro-styling 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 2d 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.

plugins/astro-expert/skills/astro-styling/SKILL.md · 95 lines

How it starts

The opening of the file, as written. The whole thing — 95 lines — stays where its author put it; the contents beside it link to each section on GitHub.

This skill addresses .astro-file styling specifically (scoping semantics unique to Astro components), not the UI framework setup itself (astro-integrations) or SOLID file-organization rules for style files (solid-astro).

Astro Styling

Agent Workflow (MANDATORY)

Before ANY implementation, use TeamCreate to spawn 3 agents:

  1. fuse-ai-pilot:explore-codebase - Analyze existing styles, integrations, and patterns
  2. fuse-ai-pilot:research-expert - Verify latest Astro/Tailwind/UnoCSS docs via Context7/Exa
  3. mcp__context7__query-docs - Check integration compatibility with Astro 7

After implementation, run fuse-ai-pilot:sniper for validation.


Overview

When to Use

  • Styling .astro components with component-scoped CSS
  • Setting up Tailwind CSS or UnoCSS in an Astro project
  • Using CSS Modules for framework-agnostic scoping
  • Applying global base styles (reset, fonts, variables)
  • Using class:list for conditional class application
  • Adding Sass/SCSS via Vite preprocessors

Styling Options

Method Scope When to Use
<style> in .astro Component Default — scoped to component
<style is:global> Global Base styles, resets
CSS Modules .module.css Component Framework components (React, Vue)
Tailwind CSS Utility Rapid UI development
UnoCSS Utility Lightweight, configurable atomic CSS
Sass/SCSS Component/Global Advanced features, variables, mixins

Reference Guide

Concepts

Topic Reference When to Consult
Scoped CSS scoped-css.md Component styling
CSS Modules css-modules.md Framework components
Global styles global-styles.md Resets, base styles
Tailwind tailwind.md Utility-first CSS
UnoCSS unocss.md Atomic CSS engine
Sass/SCSS sass.md Preprocessor features
CSS Variables css-variables.md Design tokens, themes

Read the full file on GitHub · 95 lines

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. 2d ago First seen · 95 lines · 35 tokens per session scan A 1c02e397e281

Subscribe to this mod's changes

astro-styling is a skill published in the GitHub repository fusengine/agents (25 stars, last pushed 29d ago), licensed MIT. It adds 35 tokens to every session and 997 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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