section {
  height: 100vh;
  width: 100%;
  background-position: center;
  background-repeat: no-repeat;
  background-size: cover;
  background-attachment: fixed;
}
.image-1 {
  background-image: url("https://lasnatalias.net/Galeria/LogoNatalias.jpg");
}

.image-2 {
  background-image: url("https://images.pexels.com/photos/1532771/pexels-photo-1532771.jpeg?auto=compress&cs=tinysrgb&dpr=2&h=750&w=1260");
}
.image-3 {
  background-image: url("https://images.pexels.com/photos/1144176/pexels-photo-1144176.jpeg?auto=compress&cs=tinysrgb&dpr=2&h=750&w=1260");
}
.image-4 {
  background-image: url("https://images.pexels.com/photos/189349/pexels-photo-189349.jpeg?auto=compress&cs=tinysrgb&dpr=2&h=750&w=1260");
}