body {
  max-width: 42rem;
  margin: 2rem auto;
  padding: 0 1rem;
  font: 17px/1.6 Georgia, "Times New Roman", serif;
  color: #222;
  background: #fbfaf7;
}
a { color: #2a5d8f; }
header h1 { margin-bottom: 0.2rem; }
nav { margin-bottom: 1.5rem; font-size: 0.95rem; }
h2 { font-size: 1.2rem; margin-top: 1.8rem; }
footer { margin-top: 3rem; font-size: 0.85rem; color: #777; }