v class="lines-header">Sender</div>
          <div class="lines-body">
            <div id="sender_lines" class="lines"></div>
            <input id="command_line" class="command-line" placeholder="Start typing ...." />
          </div>
        </div>
        <div class="receiver">
          <div class="lines-header">Receiver</div>
          <div class="lines-body">
            <div id="receiver_lines" class="lines"></div>
          </div>
        </div>
      </div>
    </div>
  </body>
</html>
