html,
body {
  margin: 0;
  height: 100%;
  width: 100%;
  aspect-ratio: 1;
  position: relative;
  background: black;
}

body {
  height: 0;
  padding-top: 100%;
  display: flex;
  justify-content: center;
}


img {
  margin-top: -100%;
  object-fit: contain;
}