body {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  margin: 0;
  padding: 0;
  line-height: 1.5;
}

header {
  padding: 1.5rem;
  text-align: center;
}

main {
  padding: 1.5rem;
}