.fondo-general {
      width: 100vw;
      min-height: 100vh;
      margin: 0;
      padding: 0;
      background: linear-gradient(to bottom right, #e0e0e0, #ffffff);
      font-family: Arial, sans-serif;
      text-align: center;
      display: flex;
      flex-direction: column;
      align-items: center;
      justify-content: center;
    }

    .zona-principal {
      background: #fff;
      padding: 20px;
      border-radius: 12px;
      box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
      max-width: 90vw;
    }

    .encabezado {
      font-size: 22px;
      margin-bottom: 6px;
      font-weight: bold;
      color: #223c6f;
    }

    #fecha-hora {
      font-size: 15px;
      margin-bottom: 16px;
      color: #666;
      display: block;
    }

    iframe {
      width: 75vw;
      height: 300px;
      border: none;
      border-radius: 8px;
      box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    }

  
    .banner {
      margin: 30px auto 0 auto;
      width: 80%;
    }

    .banner a {
      display: block;
    }

    .banner img {
      width: 100%;
      height: auto;
      border-radius: 8px;
      transition: transform 0.2s ease;
    }

    .banner img:hover {
      transform: scale(1.02);
      cursor: pointer;
    }