#thumbs {
  padding: 15px 0 0 57px;
	width: 722px;
  margin: auto;
}
#thumbs img {
  width: 192px;
  height: 120px;
  margin: 5px 4px;
  cursor: pointer;
}
#btnBack, #btnNext {
  width: 47px;
  height: 88px;
  border: none;
  margin-top: 150px;
  cursor: pointer;
}
#oben a:visited, a:focus, a:active {
  border: none;
  text-decoration: none;
}
#btnBack {
  background: url(../img/arrow_le.png) no-repeat;
  float: left;
  margin-right: 13px;
}

#btnNext {
  background: url(../img/arrow_ri.png) no-repeat;
  float: right;
  margin-left: 13px;
}

#imgGross {
  margin: auto;
  margin-bottom: 20px;
}