Node.jsでTailwind.cssを使いたい

Node.js(express)でTailwindCSSというCssフレームワークを使っているのすがrootパス以外のURLにリクエストを送るとtailwindフレームワークが適用できません

Nodejs
1const express = require('express');
2const expressLayouts = require('express-ejs-layouts');
3const mongoose = require('mongoose');
4const indexRouter = require('./routes/index');
5const postRouter = require('./routes/post');
6
7const app = express();
8
9app.set('view engine', 'ejs');
10app.set('views', __dirname + '/views');
11app.set('layout', 'layouts/layout');
12app.use(express.static('public'));
13app.use(expressLayouts);
14app.use(indexRouter);
15app.use(postRouter);
16
17app.listen(3000, () => {
18    console.log('Server is running!');
19});

html
1<!DOCTYPE html>
2<html lang="en">
3<head>
4    <meta charset="UTF-8">
5    <meta http-equiv="X-UA-Compatible" content="IE=edge">
6    <meta name="viewport" content="width=device-width, initial-scale=1.0">
7    <link rel="stylesheet" href="styles/style.css">
8    <title>findLocal</title>
9</head>
10<body>
11    <%- include('../partials/header.ejs') %> 
12    <%- body %> 
13</body>
14</html>

nodejs
1const express = require('express');
2const router = new express.Router();
3
4router.get('/posts/new', (req, res) => {
5    res.render('new');
6});
7
8
9module.exports = router;