body {
      margin: 0;
      font-family: 'Segoe UI', sans-serif;
      background-color: #f0f4f8;
      display: flex;
      flex-direction: column;
      align-items: center;
    }

    header {
      background-color: #007F5F;
      color: white;
      width: 100%;
      padding: 1.2rem;
      text-align: center;
      box-shadow: 0 2px 5px rgba(0,0,0,0.1);
    }

    iframe {
      margin-top: 20px;
      border: none;
      width: 90vw;
      height: 90vh;
      max-width: 1200px;
    }

    footer {
      margin-top: 20px;
      color: #555;
    }