body {
      font-family: Arial, sans-serif;
      background: #f4f4f4;
      margin: 0;
      text-align: center;
    }
    .container {
      background: #fff;
      max-width: 80%;
      margin: 20px auto;
      padding: 30px;
      border-radius: 10px;
      box-shadow: 0px 0px 10px rgba(0,0,0,0.1);
    }
    h2 {
      margin-bottom: 20px;
    }
    input {
      width: 100%;
      padding: 15px;
      font-size: 16px;
      margin-bottom: 15px;
      border: 1px solid #ccc;
      border-radius: 5px;
    }
    .btn {
      background: #28a745;
      color: white;
      border: none;
      padding: 10px 20px;
      font-size: 17px;
      border-radius: 5px;
      cursor: pointer;
    }
    .btn:hover {
      background: #218838;
    }
    .titles {
      margin-top: 30px;
      text-align: left;
    }
    .title-box {
      background: #f1f1f1;
      padding: 10px 15px;
      margin-bottom: 10px;
      border-radius: 5px;
      position: relative;
    }
    .copy-btn {
      position: absolute;
      right: 10px;
      top: 10px;
      background: #007bff;
      color: white;
      border: none;
      padding: 5px 10px;
      border-radius: 4px;
      font-size: 12px;
      cursor: pointer;
    }
    .copy-btn:hover {
      background: #0056b3;
    }