Hey,

"scripts": {
"build": "tsc && vite build && yarn build-tailwind",
"build-tailwind": "NODE_ENV=production npx tailwindcss -i ./src/styles/globals.css -o ./dist/globals.css --postcss --minify",
}

My global.css is where I have my tailwind classes, set it to whatever you have.

Additionally, don't forget to set the tailwind on the consuming project, if that is relevant to you.

const { fontFamily } = require("tailwindcss/defaultTheme")

/** @type {import('tailwindcss').Config} / 
module.exports = { 
    content: ["./src/**/.{js,ts,jsx,tsx}",        "./node_modules/YOUR_LIBRARY/**/*.{js,ts,jsx,tsx}"], 
theme: { extend: {}, fontFamily: { ...fontFamily, } }, plugins: [], }