Comprehensive Tailwind CSS v4 documentation snapshot and workflow guidance. Use when answering Tailwind v4 questions, selecting utilities/variants, configuring Tailwind v4, or migrating projects from v3 to v4 with official docs and gotcha checks.

Tailwind 4 Docs Overview Use this skill to navigate a locally synced Tailwind CSS v4 documentation snapshot and answer development, configuration, migration, implementation, refactor, and review questions with official guidance. The docs snapshot is not bundled with this skill because the upstream repository is source available but not open source. Users must initialize the snapshot themselves and are responsible for complying with the upstream license. Quick start 1. Check whether the docs snapshot is initialized ( references/docs/ and references/docs index.tsx exist). 2. If the snapshot is missing or older than one week, stop and ask to run the initialization step in "Initialization" before continuing. Do not answer the user's question until the snapshot is initialized. 3. Identify the topic (utility, variant, config, migration, compatibility, implementation, refactor, review). 4. Find the matching doc in references/docs index.tsx . 5. Load only the relevant file from references/docs/ . 6. For implementation, refactor, or review tasks, also load references/engineering playbook.md . 7. Apply guidance and call out any breaking changes or constraints. Initialization (required once per install) Run the sync script to download the Tailwind docs locally. This requires network access, git, and Python 3: This pulls content from tailwindlabs/tailwindcss.com . That repo is source available and explicitly not open source, so the user must accept its license before downloading and keep the snapshot local. If you cannot run tools or have no internet access, ask the user to run the exact command above in a terminal, then continue once references/docs/ and references/docs index.tsx exist. If the snapshot is missing or older than one week, you must ask for permission to run the command or ask the user to run it. Do not proceed with Tailwind guidance until the snapshot is initialized or refreshed. If initialization is blocked (no internet or no write access), use references/gotchas.md as a limited fallback and ask the user to consult the official docs. For implementation, refactor, or review tasks, references/engineering playbook.md can also serve as a limited fallback. References map references/docs/ is generated locally and contains the Tailwind v4 MDX docs snapshot. references/docs index.tsx is generated locally and contains the category and slug map used by the docs sidebar. references/docs source.txt captures the upstream repo, commit, and snapshot date (or reports that initialization is pending). references/engineering playbook.md is the agent oriented implementation, refactor, and review guide. references/gotchas.md provides a quick scan of common v4 migration pitfalls. MDX handling Treat export const title and export const description as metadata. Read JSX callouts like <TipInfo or <TipBad as guidance text. Common entry points Migration: references/docs/upgrade guide.mdx , references/docs/compatibility.mdx . Implementation/refactor/review: references/engineering playbook.md . Gotchas overview: references/gotchas.md . Configuration and directives: references/docs/functions and directives.mdx , references/docs/adding custom styles.mdx , references/docs/theme.mdx . Variants and responsive patterns: references/docs/hover focus and other states.mdx , references/docs/responsive design.mdx . Core behavior: references/docs/preflight.mdx , references/docs/detecting classes in source files.mdx . Migration checklist When upgrading from v3 to v4, always confirm the following in the docs: Browser support and compatibility expectations. Tooling changes: @tailwindcss/postcss , @tailwindcss/cli , @tailwindcss/vite . Import syntax: @import "tailwindcss" replaces @tailwind directives. Utility renames/removals, prefix format, and important modifier placement. Changes to variants, transforms, and arbitrary value syntax. Update workflow Run scripts/sync tailwind docs.py to refresh the snapshot. Use local repo if you already have a local clone of tailwindlabs/tailwindcss.com to speed up syncs. Always pass accept docs license .

tailwind-4-docs