:root{color-scheme:light dark}
body{margin:0;font:16px/1.6 system-ui,sans-serif;display:grid;place-items:center;min-height:100vh}
main{max-width:34rem;padding:2rem}
h1{font-size:1.5rem;margin:0 0 .5rem}
ul{padding-left:1.1rem}
code{font-family:ui-monospace,monospace}