html {
  font-family: system-ui, sans-serif;
  background: #f6f7f9;
  color: #202124;
}

body {
  margin: 0;
}

main {
  max-width: 680px;
  margin: 12vh auto;
  padding: 32px;
  background: white;
  border-radius: 12px;
  box-shadow: 0 4px 24px rgba(0,0,0,.08);
}

h1 {
  margin-top: 0;
}

.muted {
  color: #6b7280;
}

a {
  color: inherit;
}