@media only screen and (max-width: 360px) {
  body {
	 background-image: url(../../files/layout/bg360.jpg)
  }
}
  
  @media only screen and (max-width: 768px) {
  body {
	 background-image: url(../../files/layout/bg768.jpg)
  }
 } 
  
  @media only screen and (max-width: 960px) {
  body {
	 background-image: url(../../files/layout/bg960.jpg)
  }
  }
  
  @media only screen and (max-width: 1366px) {
  body {
	 background-image: url(../../files/layout/bg1366.jpg)
  }
 }
  
  @media only screen and (max-width: 1920px) {
  body {
	 background-image: url(../../files/layout/bg1920.jpg)
  }
 }