body 
{
	background-color: #000000;
	margin: 50px;
}

.centered {
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  left: 0;
  width: 50%;
  height: 50%;
  margin: auto;
  background-image: url("Retail_world.png");
  background-position: center;
  background-repeat: no-repeat;
  background-size: 80%;
}