:root{color-scheme:light dark;font-family:system-ui,-apple-system,Segoe UI,Roboto,sans-serif}body{margin:0}main{max-width:32rem;margin:4rem auto;padding:0 1rem;font-family:system-ui,-apple-system,sans-serif;line-height:1.5}button{padding:.5rem 1rem;font-size:1rem;cursor:pointer}