I\'ve started studing Node JS.
So here is my files.
index.html
app.use(express.static('public')) //server.js
const express = require('express')
const app = express()
// serve static assets from the public folder in project root
app.use(express.static('public'))
//
app.listen(8080, () => console.log('listening...'))
DOCS - https://expressjs.com/en/starter/static-files.html
Good Luck.