body {
  overflow: hiden;

  background: orange;
}

.alien {
  position: absolute;
  width: 109px;
  height: 218px;
  background-image: url(https://s3-us-west-2.amazonaws.com/s.cdpn.io/32887/alien.png);
}

.yeti {
  position: absolute;
  width: 179px;
  height: 286px;
  background-image: url(https://s3-us-west-2.amazonaws.com/s.cdpn.io/32887/yeti.png);
}

.crab {
  position: absolute;
  width: 182px;
  height: 186px;
  background-image: url(https://s3-us-west-2.amazonaws.com/s.cdpn.io/32887/crab.png);
}