text: const express = require('express');
  const path = require('path');
  const app = express();
  const PORT = 3000;
  
  app.use(express.static('public'));
  
  app.use((req, res) => {
    res.status(404);
    res.sendFile(path.join(__dirname, 'public/404.html'));
  });
  
  app.listen(PORT, () => {
    console.log(`Server is running on port ${PORT}`);
  });
  