*,:before,:after{box-sizing:border-box}html,body{color:#fff;background:#000;min-height:100%;margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif}main{place-items:center;min-height:100dvh;padding:1rem;display:grid}h1{text-align:center;margin:0;font-size:clamp(2rem,8vw,5rem)}