:root{color-scheme:dark;background:#101112}
*{box-sizing:border-box}
html,body{margin:0;min-height:100%;background:#101112}
main{min-height:100vh;min-height:100svh;display:grid;place-items:center;padding:32px}
img{display:block;width:clamp(160px,25vw,320px);height:auto;max-width:100%}