index.html

<html>
  <head>
    <meta charset="UTF-8" />
    <title>CodeRacer</title>
    <link rel="stylesheet" type="text/css" href="build/main.css" />
    <link
      href="https://fonts.googleapis.com/css2?family=Faster+One&display=swap"
      rel="stylesheet"
    />
    <link
      href="https://fonts.googleapis.com/css2?family=Michroma&display=swap"
      rel="stylesheet"
    />
    <link
      href="https://fonts.googleapis.com/css2?family=Turret+Road:wght@500&display=swap"
      rel="stylesheet"
    />
    <script src="https://cdnjs.cloudflare.com/ajax/libs/socket.io/2.3.0/socket.io.dev.js"></script>
  </head>
  <body>
    <div id="root" class="crt"></div>

    <script src="build/bundle.js"></script>
    <!-- <script src="/socket.io/socket.io.js"></script> -->
    <script>
      const socket = io.connect('http://localhost:3000');
    </script>
  </body>
</html>