gallery.css

.app__gallery {
  padding: 3rem 1rem;
  min-height: 100vh;
  background: #000000; /* fallback for old browsers */
  background: -webkit-linear-gradient(
    to right,
    #434343,
    #000000
  ); /* Chrome 10-25, Safari 5.1-6 */
  background: linear-gradient(
    to right,
    #434343,
    #000000
  ); /* W3C, IE 10+/ Edge, Firefox 16+, Chrome 26+, Opera 12+, Safari 7+ */
}
.gallery__container {
  display: flex;
  justify-content: center;
  align-items: center;
  margin: 4vmin 4vmin 10vmin 4vmin;
  overflow: hidden;
  transform: skew(3deg);
}
.gallery__container .gallery__image-card {
  flex: 1;
  transition: all 1s ease-in-out;
  height: 70vmin;
  position: relative;
}

.gallery__container .gallery__image-card:hover {
  flex-grow: 8;
}
.gallery__container .gallery__image-card:hover img {
  /* filter: grayscale(0); */
}
.gallery__container .gallery__image-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: all 1s ease-in-out;
  /* filter: grayscale(100%); */
}
.gallery__container .gallery__image-card {
  margin-right: 0.5em;
  margin-left: 0.5em;
}

@media (max-width: 960px) {
  .gallery__container .gallery__image-card {
    height: 62vmin;
  }
  .gallery__container .gallery__image-card:hover {
    flex-grow: 10;
  }
}
@media (max-width: 540px) {
  /* .gallery__container .gallery__image-card img {
    /* filter: grayscale(0); 
  } */
  .app__gallery {
    padding: 3rem 0;
  }
}