@import "https://unpkg.com/open-props";
@import "https://unpkg.com/open-props/normalize.min.css"; 
 
  
.gallery_index {
  --brightness: 0.75;
  --grayscale: 1;
  transition: flex var(--transition), filter var(--transition);
  height: 100%;
  filter: grayscale(var(--grayscale)) brightness(var(--brightness));
  -o-object-fit: cover;
     object-fit: cover;
  overflow: hidden;
  flex: 1;
}

.gallery_index:hover {
  --brightness: 1.15;
  --grayscale: 0; 
  flex: var(--magnifier);
}