Installation
Setting up Tailwind CSS in a Nuxt project.
Start by creating a new Nuxt project if you don’t have one set up already. The most common approach is to use Create Nuxt.
npm create nuxt my-projectcd my-projectInstall @tailwindcss/vite and its peer dependencies via npm.
npm install tailwindcss @tailwindcss/viteAdd the @tailwindcss/vite plugin to your Nuxt configuration as a Vite plugin.
import tailwindcss from "@tailwindcss/vite";export default defineNuxtConfig({  compatibilityDate: "2025-07-15",  devtools: { enabled: true },  vite: {    plugins: [      tailwindcss(),    ],  },});Create an ./app/assets/css/main.css file and add an @import that imports Tailwind CSS.
@import "tailwindcss";Add your newly-created ./app/assets/css/main.css to the css array in your nuxt.config.ts file.
import tailwindcss from "@tailwindcss/vite";export default defineNuxtConfig({  compatibilityDate: "2025-07-15",  devtools: { enabled: true },  css: ['./app/assets/css/main.css'],  vite: {    plugins: [      tailwindcss(),    ],  },});Run your build process with npm run dev.
npm run devStart using Tailwind’s utility classes to style your content.
<template>  <h1 class="text-3xl font-bold underline">    Hello world!  </h1></template>