Install Tailwind CSS with Ember.js

Setting up Tailwind CSS in an Ember.js project.

Create your project

Start by creating a new Ember.js project if you don't have one set up already. The most common approach is to use Ember CLI.

Terminal

npx ember-cli new my-project --embroider --no-welcome
cd my-project

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 ember-cli-build.js file, configure PostCSS to process your CSS files.

ember-cli-build.js

'use strict';

const EmberApp = require('ember-cli/lib/broccoli/ember-app');

module.exports = function (defaults) {
  const app = new EmberApp(defaults, {
    // Add options here
  });

  const { Webpack } = require('@embroider/webpack');
  return require('@embroider/compat').compatBuild(app, Webpack, {
    skipBabel: [
      {
        package: 'qunit',
      },
    ],
    packagerOptions: {
      webpackConfig: {
        module: {
          rules: [
            {
              test: /\.css$/i,
              use: ['postcss-loader'],
            },
          ],
        },
      },
    },
  });
};

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

Create an ./app/app.css file and add an @import for Tailwind CSS.

app.css

@import "tailwindcss";

Import the CSS file

Import the newly-created ./app/app.css file in your ./app/app.js file.

app.js

import Application from '@ember/application';
import Resolver from 'ember-resolver';
import loadInitializers from 'ember-load-initializers';
import config from 'my-project/config/environment';
import 'my-project/app.css';

export default class App extends Application {
  modulePrefix = config.modulePrefix;
  podModulePrefix = config.podModulePrefix;
  Resolver = Resolver;
}

loadInitializers(App, config.modulePrefix);

Start your build process

Run your build process with npm run start.

Terminal

npm run start

Start using Tailwind in your project

Start using Tailwind's utility classes to style your content.

application.hbs

{{page-title "MyProject"}}

<h1 class="text-3xl font-bold underline">
  Hello world!
</h1>

{{outlet}}