.carousel {
  transition: opacity 2s ease-in-out;
  opacity: 0;
  display: none;
  display: block;
  cursor: pointer;
  margin: auto;
  width: 100%;
  max-width: 800px;
  margin-bottom: 20px;
  aspect-ratio: 16 / 9;
}

.carousel.active {
  opacity: 1;
}