I agree this css file. Your fault will be only due to wrong css.

.card img {
  transition: transform 0.3s ease;
}

.card:hover img {
  transform: scale(1.1);
}

.card:hover::after {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
}