.galleryItemContainer {
  position: relative;
  width: 100%;
  max-height:450px; overflow:hidden;
}

.galleryItemImage {
  width: 100%;
  height: auto;
}

.galleryItemOverlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: rgba(255,255,255,0.75);
  overflow: hidden;
  width: 100%;
  height: 0;
  transition: .5s ease;
}

.galleryItemContainer:hover .galleryItemOverlay {
  height: 100%;
}

.galleryItemActions {
  white-space: nowrap; 
  color: white;
  font-size: 20px;
  position: absolute;
  overflow: hidden;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  -ms-transform: translate(-50%, -50%);
}