* {
  margin: 0;
}

.section {
  display: flex;
  height: 100vh;
  justify-content: center;
  align-items: center;
  background-color: hsla(0, 0%, 11.33%, 1);
}

.initialImage {
  width: 70%;
  height: 70%;
  background-image: url(https://fastly.picsum.photos/id/238/1200/800.jpg?hmac=8lp9I5pMMLdpcomln5lXu_D5RonSO26gOARY2cPIdKo);
  background-position: 50%;
  background-size: cover;
}

.overlay {
  width: 100%;
  height: 100%;
  background-image: url(https://fastly.picsum.photos/id/249/1200/800.jpg?hmac=Bdi84DsV4Aw7rXcFRBthP6AW0IUNYSbVom1bIUZbv1w);
  background-position: 50%;
  background-size: cover;
  clip-path: polygon(25% 25%, 75% 25%, 75% 75%, 25% 75%);
}