html,
body {
  margin: 0;
  padding: 0;
}
html {
  background: #eee;
}
body {
  font: 1em sans;
}
#sprite {
  position: absolute;
  margin: -250px 0 0 -440px;
  padding: 0;
  width: 880px;
  height: 800px;
  top: 50%;
  left: 50%;
  z-index: 1;
  background: url(http://placehold.it/880x500/dedede) 0 0 no-repeat;
}
#icon {
  position: absolute;
  margin: 0;
  padding: 0;
  width: 16px;
  height: 16px;
  z-index: 2;
  background: url(icon.png) 0 0 no-repeat;
}