1. Create your project

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

    npm create rspack@latest
  2. Install Tailwind CSS

    Install tailwindcss and its peer dependencies, then generate your tailwind.config.js and postcss.config.js files.

    npm install -D tailwindcss postcss postcss-loader autoprefixernpx tailwindcss init -p
  3. Enable PostCSS support

    In your rspack.config.js file, enable the PostCSS loader. See the documentation for more information.

    module.exports = {
      // ...
      module: {
        rules: [
            test: /\.css$/,
            use: ["postcss-loader"],
            type: "css",
      // ...
  4. Configure your template paths

    Add the paths to all of your template files in your tailwind.config.js file.

    /** @type {import('tailwindcss').Config} */
    export default {
      content: [
      theme: {
        extend: {},
      plugins: [],
  5. Add the Tailwind directives to your CSS

    Add the @tailwind directives for each of Tailwind’s layers to your ./src/index.css file.

    @tailwind base;
    @tailwind components;
    @tailwind utilities;
  6. Start your build process

    Run your build process with npm run dev.

    npm run dev
  7. Start using Tailwind in your project

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

    export default function App() {
      return (
        <h1 className="text-3xl font-bold underline">
          Hello world!