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Copilot-Skills: Instructions file for GitHub Copilot

.github/instructions/tailwind.instructions.md

Copilot-Skills tailwind.instructions.md is an instructions file for GitHub Copilot from TheSethRose/Copilot-Skills. It costs 2,060 tokens per session, scanned A, original, MIT.

A set of instructions for using Tailwind CSS version 4, a framework that styles pages with small utility classes. It explains responsive layouts, dark mode, hover states, breakpoints, and CSS variables.

In plain words
What is it for?
Use it to build responsive page layouts and style hover, dark-mode, and screen-size variations with Tailwind CSS.
Why use it?
It helps avoid common differences between Tailwind versions and keeps responsive styling consistent. It also points out changes from Tailwind version 3.

Instructions file for GitHub Copilot

Written for GitHub Copilot: a Copilot instructions file.

This is TheSethRose/Copilot-Skills's own configuration. It tells GitHub Copilot how to work on Copilot-Skills itself, so it is not a mod to install elsewhere. Copy it as a starting point and replace the rules that are about this project. Everything Copilot-Skills configures →

not rated 3repo 10mo ago A scan 2,060 tokens original MIT
View source ↗ TheSethRose/Copilot-Skills x.com
Reuse

Borrowing it

Nothing to install: this file belongs to TheSethRose/Copilot-Skills. Take a copy, put it at the same path in your own repository, and replace the rules that are about this project with yours.

Copy the file
curl -O https://raw.githubusercontent.com/TheSethRose/Copilot-Skills/main/.github/instructions/tailwind.instructions.md
Clone the repo
git clone --depth 1 https://github.com/TheSethRose/Copilot-Skills

Made for: GitHub Copilot.

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 Copilot-Skills tailwind.instructions.md

README.md
[![agentmods](https://agentmods.dev/badge/instructions/thesethrose/copilot-skills/tailwind/github.svg)](https://agentmods.dev/instructions/thesethrose/copilot-skills/tailwind)
Your own site
<a href="https://agentmods.dev/instructions/thesethrose/copilot-skills/tailwind"><img src="https://agentmods.dev/badge/instructions/thesethrose/copilot-skills/tailwind/github.svg" alt="Measured on agentmods" height="20"></a>

Or the 80×15 button, for a site that already has a row of RSS and ATOM ones. Only the verdict fits; the numbers stay here.

agentmods 80×15 button for Copilot-Skills tailwind.instructions.md

Your own site · 80×15
<a href="https://agentmods.dev/instructions/thesethrose/copilot-skills/tailwind"><img src="https://agentmods.dev/badge/instructions/thesethrose/copilot-skills/tailwind.svg" alt="Reviewed on agentmods" width="80" height="20"></a>
Per session 2,060 This file is loaded in full into every session.
When invoked 2,060 The same file — it is already loaded in full.
Security scan A 0 findings. A grade says what 26 rules found in the file — not that it is safe.
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 $0.02060 $0.02060
Opus 5.5 $0.00824 $0.00824
Sonnet 5.5 $0.00412 $0.00412
Haiku 4.5 $0.00206 $0.00206

Measured 1mo ago against content hash a2024d6c61f7, method: parsed. Prices are Anthropic first-party input rates as of 2026-10-07, from the pricing page.

Security

Grade A, and why

Copilot-Skills tailwind.instructions.md 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 1mo 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.

.github/instructions/tailwind.instructions.md · 230 lines

How it starts

The opening of the file, as written. The whole thing — 230 lines — stays where its author put it; the contents beside it link to each section on GitHub.

Tailwind CSS v4 - Automatic Context Instructions

Related Prompt: /tailwind
Related Skill: .github/copilot-skills/frontend/tailwind-v4/

Triggers: tailwind, css utilities, responsive design, dark mode, styling, breakpoint, hover state

Context: Utility-First CSS Framework

When working with Tailwind CSS files or styling with utility classes, this context is automatically activated.

Core Principles

Mobile-First Responsive Design

  • No prefix = applies to all screen sizes
  • sm, md, lg, xl, 2xl = breakpoint prefixes (add at or above that size)
  • Example: w-1/2 md:w-1/3 lg:w-1/4 = different widths at each breakpoint
  • Default breakpoints: sm (640px), md (768px), lg (1024px), xl (1280px), 2xl (1536px)

Variant Stacking (Left to Right)

  • v4 change: Variants apply left-to-right, not right-to-left
  • Hover: hover:bg-blue-600 applies on hover
  • Dark mode: dark:text-white applies in dark mode
  • Combine: dark:hover:bg-blue-600 = dark mode hover state
  • Responsive: md:dark:hover:underline = medium screens and up, dark mode, on hover

CSS Variables as First-Class

  • v4 removed @tailwind directives (v3: @tailwind base;)
  • v4 requires: @import "tailwindcss";
  • Theme variables: Access colors via var(--color-blue-500) in custom CSS
  • Custom properties: Define with @theme { --my-color: #123456; }

Default Behaviors

When styling a component

  1. Start with layout utilities (flex, grid, block, display)
  2. Add spacing (p-4, m-6, gap-4)
  3. Add typography (text-lg, font-bold)
  4. Add colors (bg-blue-500, text-gray-700)
  5. Add effects (shadow, rounded-lg)
  6. Add responsive prefixes (md:, lg:)
  7. Add interactive states (hover:, focus:, dark:)

When using dark mode

  • Add dark: prefix to utilities that should change: bg-white dark:bg-gray-900
  • Dark mode uses @media (prefers-color-scheme: dark) by default
  • Can be overridden with class-based approach: <html class="dark">

Read the full file on GitHub · 230 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. 1mo ago First seen · 230 lines · 2,060 tokens per session scan A a2024d6c61f7

Subscribe to this mod's changes

Copilot-Skills tailwind.instructions.md is an instructions file published in the GitHub repository TheSethRose/Copilot-Skills (3 stars, last pushed 10mo ago), licensed MIT. It adds 2,060 tokens to every session, about $0.0082 per session on Opus 5.5. 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 2026-09-03.

CSS and stylingFrontendclaude-skillscopilotgithubskills
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