.tiles {
  position: relative;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.tile {
  position: relative;
  float: left;
  width: 100%;
  height: 100%;
  overflow: hidden;
  cursor: zoom-in;
}

.photo {
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  transition: transform .5s ease-out;
}