body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: #0b1220;
  color: #f8fafc;
  display: grid;
  place-items: center;
  min-height: 100vh;
}
main {
  text-align: center;
  max-width: 40rem;
  padding: 2rem;
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 1rem;
  background: rgba(255, 255, 255, 0.04);
}
h1 {
  margin: 0 0 1rem;
}
p {
  margin: 0;
  line-height: 1.7;
}