body 
{
  background-color:#dddddd; 
  background-repeat: no-repeat,no-repeat,no-repeat;
  background-attachment: fixed,fixed,fixed;
  background-size: auto, auto, auto;
  background-image:url( '../images/bg1.png'),url( '../images/bg2.png'),url( '../images/bg3.png'); 
  background-position: bottom left, bottom left, bottom right;
}