public/chat.html

<!DOCTYPE html>
<html>
  <head>
    <meta name="viewport" content="width=device-width,initial-scale=1.0" />
    <title>Copy Chat</title>
    <link rel="stylesheet" href="styles.css" />
    <!-- <link rel="stylesheet" href="background.css" /> -->
    <link
      href="https://unpkg.com/boxicons@2.1.4/css/boxicons.min.css"
      rel="stylesheet"
    />
  </head>

  <body>
    <div class="room-users-modal">
      <h1 class="close_btn">x</h1>
      <a class="log-out"><i class="bx bx-log-out"></i></a>

      <ol id="room-users" class="room-users"></ol>
    </div>
    <header>
      <nav class="navbar">
        <div class="logo">
          <img src="images/chat2.png" alt="logo" class="app-logo" />
        </div>
        <div class="room-name-div">
          <p class="copy-room-id"><i class="bx bxs-copy"></i></p>
          <h3 class="room-name"></h3>
        </div>
        <div class="room">
          <i class="bx bx-share-alt"></i>
          <img src="images/afds.png" alt="group" class="users-group" />
          <h1 class="NumberOfUsers">1</h1>
        </div>
      </nav>
    </header>
    <div id="container" class="container">
      <div class="error-wrong-link hidden">
        <img src="images/200w.gif" width="80%" />
        <p>Wrong Link found!! .... Enter a valid link</p>
        <br />
        <p class="hints-to-Join">
          HINT💡 1: To Create a room, link must contain a username and
          type="create"
        </p>
        <p class="hints-to-Join">
          HINT💡 2: To Join a room, link must contain a username and a 6 digit
          roomId.
        </p>
        <br />
        <p class="or">or</p>
        <br />
        <a href="" id="go-home-link" class="button-29">go to home page</a>
      </div>
      <div id="chatbox" class=""></div>
    </div>

    <footer class="isLoggedIn">
      <form id="form" action="">
        <textarea id="input" autocomplete="off"></textarea>
        <button>Send</button>
      </form>
    </footer>

    <script src="https://cdn.socket.io/4.7.2/socket.io.min.js"></script>
    <script src="./js/chat.js"></script>
  </body>
</html>