*{box-sizing:border-box;margin:0;padding:0}body,html{height:100%}body{font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:#fafafa;color:#171717}main{display:flex;min-height:100vh;align-items:center;justify-content:center;padding:2rem;text-align:center}h1{font-size:clamp(1.75rem,4vw,2.5rem);font-weight:600;letter-spacing:-.02em}