* { margin: 0; padding: 0; box-sizing: border-box; }

html, body { height: 100%; }

body {
  background: #F3EEE4;
  display: grid;
  place-items: center;
}

main { padding: 24px; width: 100%; display: flex; justify-content: center; }

h1 img {
  display: block;
  width: min(480px, 80vw);
  height: auto;
}