body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

.intro {
  max-width: 60rem;
  margin: 0 auto;
  padding: 1.5rem 1.5rem 0;
}

.notice {
  padding: 0.75rem 1rem;
  border-left: 4px solid #b45309;
  background: #fef3c7;
  color: #451a03;
}