/* Banner */
.banner {
    background-image: url('imagenes/construction-banner.jpg');
    background-size: cover;
    background-position: center;
    color: #fff;
    text-align: center;
    padding: 100px 20px;
  }
  
  .banner h2 {
    font-size: 36px;
    margin-bottom: 20px;
  }