body {
    height: 100%;
    background-repeat: no-repeat;
	background: url(enconstruccion.webp) no-repeat center center fixed;
	background-size: 100% 100%;
	background-position: center center;
	background-attachment: fixed;

	
}

@media only screen and (max-width: 767px) {
  body {
    background-image: url(images/background-photo-mobile-devices.jpg);
  }
}