body {
      font-family: Arial, sans-serif;
      background-color: #f0f0f0;
      margin: 0;
      padding: 0;
    }
    .container {
      max-width: 1000px;
      margin: 0 auto;
      padding: 20px;
      background-color: #fff;
      box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    }
    h1 {
      font-family: 'Comic Sans MS', cursive, sans-serif;
      color: #333;
      text-align: center;
      margin: 0;
    }
    .header {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 20px;
    }
    .navbar {
      overflow: hidden;
      background-color: #333;
      margin-top: 20px;
    }
    .navbar a {
      float: left;
      display: block;
      color: #f2f2f2;
      text-align: center;
      padding: 14px 16px;
      text-decoration: none;
    }
    .navbar a:hover {
      background-color: #ddd;
      color: black;
    }
    .navbar-right {
      float: right;
      color: white;
      padding: 14px 16px;
    }
    .section {
      margin: 20px 0;
    }
    .upload-section {
      margin-top: 20px;
    }
    #about, #contact {
      display: none;
    }
    #uploadForm {
      display: flex;
      gap: 10px;
      align-items: center;
    }
    #uploadForm input[type="file"],
    #uploadForm input[type="text"] {
      border: 1px solid #ccc;
      padding: 10px;
      background: #f9f9f9;
      flex: 1;
    }
    #uploadForm button {
      padding: 10px;
      background-color: green;
      color: white;
      border: none;
      cursor: pointer;
    }
    #uploadForm button:hover {
      background-color: darkgreen;
    }
    .checkbox-container {
      display: flex;
      align-items: center;
      gap: 10px;
      margin-top: 10px;
    }
    .checkbox-container label {
      display: flex;
      align-items: center;
      gap: 5px;
      cursor: pointer;
    }
    .checkbox-container input[type="checkbox"] {
      display: none;
    }
    .checkbox-container input[type="checkbox"] + span {
      display: inline-block;
      width: 16px;
      height: 16px;
      border: 2px solid #000;
      text-align: center;
      line-height: 12px;
    }
    .checkbox-container input[type="checkbox"]:checked + span {
      background-color: green;
      color: #fff;
    }
    #resultDisplay {
      margin-top: 20px;
    }