body {  
  display: block;
  position: relative;
  height:100%;
  width:100%;
}

body::after {
  content: "";
 background:url(draft.PNG) no-repeat;
 background-attachment: fixed;
  opacity: 0.05;
  top: 0;
  left: 100px;
  bottom: 0;
  right: 0;
  position: absolute;
  z-index: 1;  
  height:100%;
  width:100%;
}