body {
   background-image: url(images/background-photo2.png);
  
 
background-position: center center;
  
 

  background-repeat: no-repeat;
  
 
  background-attachment: fixed;
  
  

  background-size: cover;
  
  

  background-color:#transparent;
  
  

}

@media only screen and (max-width: 767px) {
  body {
  background-image: url(images/background-photo-mobile-devices2.png);
  }
	}