Install Tailwind CSS with Symfony

Setting up Tailwind CSS in a Symfony project.

Create your project

Start by creating a new Symfony project if you don’t have one set up already. The most common approach is to use the Symfony Installer.

Terminal

symfony new --webapp my-projectcd my-project

Install Webpack Encore

Install Webpack Encore, which handles building your assets. See the documentation for more information.

Terminal

composer remove symfony/ux-turbo symfony/asset-mapper symfony/stimulus-bundlecomposer require symfony/webpack-encore-bundle symfony/ux-turbo symfony/stimulus-bundle

Install Tailwind CSS

Using npm, install @tailwindcss/postcss and its peer dependencies, as well as postcss-loader.

Terminal

npm install tailwindcss @tailwindcss/postcss postcss postcss-loader

Enable PostCSS support

In your webpack.config.js file, enable the PostCSS Loader. See the documentation for more information.

webpack.config.js

Encore  .enablePostCssLoader();

Configure PostCSS Plugins

Create a postcss.config.mjs file in the root of your project and add the @tailwindcss/postcss plugin to your PostCSS configuration.

postcss.config.mjs

export default {  plugins: {    "@tailwindcss/postcss": {},  },};

Import Tailwind CSS

Add an @import to ./assets/styles/app.css that imports Tailwind CSS and an @source that ignores the public dir to prevent recompile loops in watch mode.

app.css

@import "tailwindcss";@source not "../../public";

Start your build process

Run your build process with npm run watch.

Terminal

npm run watch

Start using Tailwind in your project

Make sure your compiled CSS is included in the <head> then start using Tailwind’s utility classes to style your content.

base.html.twig

<!doctype html><html>  <head>    <meta charset="utf-8" />    <meta      name="viewport"      content="width=device-width, initial-scale=1.0"    />    {% block stylesheets %}      {{ encore_entry_link_tags('app') }}    {% endblock %}  </head>  <body>    <h1 class="text-3xl font-bold underline">      Hello world!    </h1>  </body></html>