:root {
  color-scheme: light dark;
  font-family: system-ui, sans-serif;
}
body {
  margin: 0;
  padding: 2rem;
}
main {
  max-width: 38rem;
  margin: auto;
}
button {
  font: inherit;
  padding: 0.8rem 1.2rem;
  border-radius: 0.5rem;
}