.contenido-principal {
      padding: 33px 20px;
      text-align: center;
         
    }

@media (min-width: 768px) {
  .contenido-principal  {
    display: none;
  }
}

    .contenido-principal h1 {
      font-size: 24px;
      margin-bottom: 10px;
    }

    .contenido-principal p {
      font-size: 16px;
      color: #444;
    }

    .bottom-nav {
      position: fixed;
      bottom: 0;
      left: 0;
      width: 100%;
      background-color:  #460a43; /* morada */
      display: flex;
      justify-content: space-around;
      align-items: center;
      padding: 10px 0;
      z-index: 999;
    }

    .bottom-nav a {
      color: white;
      text-decoration: none;
      font-size: 12px;
      display: flex;
      flex-direction: column;
      align-items: center;
    }

    .bottom-nav i {
      font-size: 20px;
      margin-bottom: 3px;
    }

    .bottom-nav a:hover {
      color: #ffd700; /* Amarillo dorado en hover */
    }