:root{color-scheme:light dark}*,:after,:before{box-sizing:border-box}body,html{margin:0;padding:0}body{min-height:100dvh;display:flex;align-items:center;justify-content:center;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif;line-height:1.5}.placeholder{padding:24px;text-align:center}.placeholder h1{margin:0 0 8px;font-size:2rem}.placeholder p{margin:0;opacity:.7}