#obsah {
	text-align: left;
  position: relative;
  margin-top: 2px;
  margin-left: auto;
  margin-right: auto;
  width: 750px;
  height: 210px;
}
#obsah h3 {
	display: none;
}
#obsah .neprihlasen {
	display: block;
	position: absolute;
  left: 0px;
  top: 0px;
  width: 750px;
  height: 210px;
  background: white;
}