Install Tailwind CSS with SvelteKit

Setting up Tailwind CSS in a SvelteKit project.

Create your project

Start by creating a new SvelteKit project if you don't have one set up already. The most common approach is outlined in the SvelteKit documentation.

Terminal

npx sv create my-projectcd my-project

Install Tailwind CSS

Install @tailwindcss/vite and its peer dependencies via npm.

Terminal

npm install tailwindcss @tailwindcss/vite

Configure Vite Plugin

Add the @tailwindcss/vite plugin to your Vite configuration.

vite.config.ts

import { sveltekit } from '@sveltejs/kit/vite';import { defineConfig } from 'vite';import tailwindcss from '@tailwindcss/vite';export default defineConfig({  plugins: [    tailwindcss(),    sveltekit(),  ],});

Import Tailwind CSS

Create a ./src/app.css file and add an @import that imports Tailwind CSS.

app.css

@import "tailwindcss";

Import the CSS file

Create a ./src/routes/+layout.svelte file and import the newly-created app.css file.

+layout.svelte

<script>  let { children } = $props();  import "../app.css";</script>{@render children()}

Start your build process

Run your build process with npm run dev.

Terminal

npm run dev

Start using Tailwind in your project

Start using Tailwind’s utility classes to style your content, making sure to import your Tailwind CSS theme for any <style> blocks that need to be processed by Tailwind.

+page.svelte

<h1 class="text-3xl font-bold underline">  Hello world!</h1><style lang="postcss">  @reference "tailwindcss/theme";  :global(html) {    background-color: theme(--color-gray-100);  }</style>

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