body {
  margin: 0;
  padding: 0;
}
#sidlo {
  position: relative;
}
#okno,
#hlava {
  position: absolute;
}
#okno {
  top: 250px;
  left: 705px;
  width: 40px;
  height: 80px;
  cursor: pointer;
  background: url('../img/blank.gif');
}
#hlava {
  top: 16px;
  left: 16px;
  width: 300px;
  height: 300px;
  background: #ddd url('../img/zalm.jpg') no-repeat 10px 10px;
  padding: 10px;
}