/* Overlay del icono de ampliar encima de las imágenes */
.zoomable .overlay-zoom{
  position: absolute;
  right: .5rem;
  bottom: .5rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: rgba(0,0,0,.55);
  color: #fff;
  opacity: 0;
  transform: translateY(4px);
  transition: opacity .2s ease, transform .2s ease;
}
.zoomable:hover .overlay-zoom{
  opacity: 1;
  transform: translateY(0);
}
.overlay-zoom i{
  font-size: 1.1rem;
  line-height: 1;
}