:root{font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif}*{margin:0;padding:0;box-sizing:border-box}body{background:#fff;color:#000}main{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:1.5rem;text-align:center}main p{font-size:clamp(1rem,4vw,1.5rem)}