:root{color-scheme:light}*{box-sizing:border-box}body,html{min-height:100%}body{margin:0;background:#ffffff;color:#111111;font-family:Arial,Hiragino Sans,Yu Gothic,sans-serif}main{display:grid;min-height:100svh;place-items:center}h1{margin:0;font-size:clamp(2rem,7vw,4rem);font-weight:500;letter-spacing:.04em}