Default theme doesn't work

[Aleksandern]

Hello.

The default theme doesn't work but TailwindCSS classes work.
Input is not rounded, buttons have white background etc..

tailwind.config.js

const { createGlobPatternsForDependencies } = require('@nx/react/tailwind');
const { join } = require('path');

/** @type {import('tailwindcss').Config} */
module.exports = {
  content: [
    join(
      __dirname,
      '{src,pages,components,app}/**/*!(*.stories|*.spec).{ts,tsx,html}',
    ),
    ...createGlobPatternsForDependencies(__dirname),
    'node_modules/flowbite-react/**/*.{js,jsx,ts,tsx}',
  ],
  theme: {
    extend: {},
  },
  plugins: [
    require('flowbite/plugin'),
  ],
};

postcss.config.js

const { join } = require('path');

// Note: If you use library-specific PostCSS/Tailwind configuration then you should remove the `postcssConfig` build
// option from your application's configuration (i.e. project.json).
//
// See: https://nx.dev/guides/using-tailwind-css-in-react#step-4:-applying-configuration-to-libraries

module.exports = {
  plugins: {
    tailwindcss: {
      config: join(__dirname, 'tailwind.config.js'),
    },
    autoprefixer: {},
  },
};

    "flowbite": "^1.8.1",
    "flowbite-react": "^0.6.4",
    "next": "13.4.1",

Did I miss something?
Thank you.