index.html

<!DOCTYPE html>
<html lang="pt-br">

<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Simple Chat</title>
  <link rel="stylesheet" href="css/style.css">
</head>

<body>
  <div class="nickname_container" id="nick">

    <span>Type your nickname:</span>
    <form id="submit"><input type="text" id="nickname"></form>

  </div>

  <div id="chat" hidden>
    <div class="menu">
      <div class="name" id="name">Alex</div>
      <div class="last" id="time">18:09</div>
    </div>
    <ol class="chat">

    </ol>

    <input class="textarea" type="text" placeholder="Type here!" id="textarea" />

  </div>

  <script src="js/jquery.min.js"></script>
  <script src="/socket.io/socket.io.js"></script>
  <script src="js/js.js"></script>

</body>

</html>