.overlayFoto {
  position: fixed; /* Sit on top of the page content */
  display: none; /* Hidden by default */
  width: 100%; /* Full width (cover the whole page) */
  height: 100%; /* Full height (cover the whole page) */
  top: 0px;
  left: 0px;
  right: 0px;
  bottom: 0px;
  padding: 5px;
  background-color: #dddddd;
  overflow-y: scroll;
  opacity: 1.0;
}

a {
  text-decoration: none;
  color : #0044FF;
}

a:hover {
  color : #000000;
  background:yellow;
}