<!doctype html>
<html>
  <head>
    <title>Test Chat Interface</title>
    <style>
      body {
        font-family: Arial, sans-serif;
        max-width: 800px;
        margin: 0 auto;
        padding: 20px;
      }
      #user-info {
        background: #f0f0f0;
        padding: 10px;
        margin-bottom: 20px;
        border-radius: 5px;
      }
      #chat-container {
        border: 1px solid #ccc;
        padding: 20px;
        min-height: 300px;
        margin-bottom: 20px;
      }
      .chat-mess