i have no idea if this is even a problem or im just stupid, but im currently trying to make a questionnaire that runs over a local server (port 3000 default), but whenever i try to run the server using node.js and boot up localhost:3000, it only displays the default parameters that i've put in my HTML document that are functionally placeholders, due to them being dynamically removed and added by the associated js script. In addition to this, it appears that the stylesheet that i've made using CSS is just not being loaded, so i have a suspicion that these might be connected, and that im doing something wrong in calling them to the localhost or something. My HTML File looks like this.

Whereas i have a simple database connection and server hosting backend that looks like this:

const express = require('express');
const app = express();
const bodyParser = require('body-parser');
const mysql = require('mysql');
const cors = require('cors');
const port = 3000;

const connection = mysql.createConnection({
    host    : 'localhost',
    user    : 'root',
    password: 'Arcinblade.3',
    database: 'applicants'
});

app.use( bodyParser.json() ); 

app.use(bodyParser.urlencoded({   
 extended: true})); 
app.use(cors());

app.listen(port, ()=>{
    connection.connect((err) => {
        if(err) {
          console.log('Database not connected!', err);
        } else {
          console.log(`Server is running on port ${port}`);
          console.log('Database Connected!');
          
        }
    })
});