--- title: Simple Tailwind CSS 4 Setup for Jekyll | daily.dev description: Tailwind CSS 4 replaces JavaScript configuration with CSS-based setup using @theme directives. The jekyll-tailwind gem integrates Tailwind 4 into Jekyll sites... canonical: https://daily.dev/posts/simple-tailwind-css-4-setup-for-jekyll-llesuqwod twitter:card: summary_large_image twitter:site: @dailydotdev og:type: website og:site_name: daily.dev og:title: Simple Tailwind CSS 4 Setup for Jekyll | daily.dev og:description: Tailwind CSS 4 replaces JavaScript configuration with CSS-based setup using @theme directives. The jekyll-tailwind gem integrates Tailwind 4 into Jekyll sites... og:url: https://daily.dev/posts/simple-tailwind-css-4-setup-for-jekyll-llesuqwod og:image: https://api.daily.dev/og/posts/lLESUQWOD.png og:image:alt: Simple Tailwind CSS 4 Setup for Jekyll og:image:width: 1200 og:image:height: 630 og:locale: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Simple Tailwind CSS 4 Setup for Jekyll **[RUBYLAND](https://daily.dev/sources/rubyla)** · 2 min read · 1 upvotes · 0 comments ## Summary Tailwind CSS 4 replaces JavaScript configuration with CSS-based setup using @theme directives. The jekyll-tailwind gem integrates Tailwind 4 into Jekyll sites without requiring a separate build pipeline or PostCSS configuration. Setup involves adding the gem to your Gemfile, configuring _config.yml to point at your CSS file, defining custom theme values in a CSS file using @theme blocks, and optionally installing Tailwind plugins via npm. The gem hooks into Jekyll's build process, automatically scanning templates for classes and generating optimized CSS with hot reload support. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Upgrading to Tailwind CSS v4: A Migration Guide](https://daily.dev/posts/upgrading-to-tailwind-css-v4-a-migration-guide-cjt0cbmrl) · TypeScript.TV · 0 upvotes · 1 comments - [A dev’s guide to Tailwind CSS in 2026](https://daily.dev/posts/a-dev-s-guide-to-tailwind-css-in-2026-3egyhtwax) · LogRocket · 2 upvotes · 0 comments - [what's new and how to upgrade](https://daily.dev/posts/what-s-new-and-how-to-upgrade-x7ku7eoal) · FireUp · 16 upvotes · 2 comments - [Tailwind CSS v4 Migration: Clean Vite & PostCSS Pipelines](https://daily.dev/posts/tailwind-css-v4-migration-clean-vite-postcss-pipelines-a07b2pkyn) · SitePoint · 1 upvotes · 0 comments - [How to Leverage PurgeCSS in Your Rails App for Faster Stylesheets - FastRuby.io](https://daily.dev/posts/how-to-leverage-purgecss-in-your-rails-app-for-faster-stylesheets---fastruby-io-i5zhqhutk) · RUBYLAND · 0 upvotes · 0 comments --- Tags: [#webdev](https://daily.dev/tags/webdev), [#css](https://daily.dev/tags/css), [#ruby](https://daily.dev/tags/ruby), [#tailwind-css](https://daily.dev/tags/tailwind-css) [View this post on daily.dev](https://daily.dev/posts/simple-tailwind-css-4-setup-for-jekyll-llesuqwod) ```json {"@context":"https://schema.org","@graph":[{"@type":"Organization","@id":"https://daily.dev/#organization","name":"daily.dev","url":"https://daily.dev","logo":{"@type":"ImageObject","url":"https://daily.dev/apple-touch-icon.png","width":180,"height":180},"sameAs":["https://twitter.com/dailydotdev","https://github.com/dailydotdev","https://www.linkedin.com/company/daily-dev-ltd"]},{"@type":"WebSite","@id":"https://daily.dev/#website","url":"https://daily.dev","name":"daily.dev","publisher":{"@id":"https://daily.dev/#organization"},"potentialAction":{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https://daily.dev/search?q={search_term_string}"},"query-input":"required name=search_term_string"}}]} {"@context":"https://schema.org","@type":"TechArticle","headline":"Simple Tailwind CSS 4 Setup for Jekyll","url":"https://daily.dev/posts/simple-tailwind-css-4-setup-for-jekyll-llesuqwod","mainEntityOfPage":{"@type":"WebPage","@id":"https://daily.dev/posts/simple-tailwind-css-4-setup-for-jekyll-llesuqwod"},"datePublished":"2026-01-27T22:21:41.024Z","dateModified":"2026-01-27T22:22:00.259Z","description":"Tailwind CSS 4 replaces JavaScript configuration with CSS-based setup using @theme directives. 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