Use Case of calc() #2: X Pixels From Bottom Right Corner

by infous

CSS

html, body {
  height: 100%;
  background: #ccc;
  padding: 20px;
}
body {
  padding: 20px;
  background: white url(http://s.cdpn.io/3/robot-dog.png) no-repeat calc(100% - 50px) calc(100% - 20px);
  
}
* {
  box-sizing: border-box;
}