:root { color-scheme: light; }
* { box-sizing: border-box; margin: 0; }
body {
  min-height: 100vh;
  min-height: 100dvh;
  display: grid;
  place-items: center;
  padding: 24px;
  background: #fff;
  color: #6b6b6b;
  font: 15px/1.5 ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
main { display: grid; justify-items: center; gap: 20px; text-align: center; }
img { width: min(200px, 60vw); height: auto; }