.image-item {
  cursor: pointer;
}

.image-item img {
  border: 1px solid #dee2e6;
  opacity: 0.5;
  transition: opacity 0.15s linear;
}

.image-item:hover img, .image-item.active img {
  opacity: 1;
}

.image-item.active {
  cursor: default;
}