html, body {
  width: 100%;
  height: 100%;
  margin: 0;
  background: #f3eee5;
}

main {
  width: 100%;
  height: 100vh;
  height: 100dvh;
  display: grid;
  place-items: center;
}

img {
  display: block;
  width: 100%;
  height: 100%;
  min-height: 0;
  object-fit: contain;
}