body { font-family: Georgia, serif; max-width: 680px; margin: 50px auto; padding: 0 20px; color: #2b2b2b; line-height: 1.6; }
header { border-bottom: 1px solid #ddd; margin-bottom: 24px; padding-bottom: 16px; }
nav a { color: #445; text-decoration: none; margin-right: 4px; }
nav a:hover { text-decoration: underline; }
footer { margin-top: 40px; border-top: 1px solid #ddd; padding-top: 16px; font-size: 0.85em; color: #888; }