#rec1349077421 .mat-img {
  opacity: 0;
  transition: opacity 0.5s ease-in-out;
  pointer-events: none;
  position: absolute; /* все картинки лежат друг на друге */
  top: 0;
  left: 0;
}

#rec1349077421 .mat-img.active {
  opacity: 1;
  pointer-events: auto;
}