body { font-family: Arial, sans-serif; max-width: 800px; margin: auto; padding: 1rem; }
header, footer { text-align: center; margin-bottom: 1rem; }
nav a { margin: 0 1rem; text-decoration: none; color: #3366cc; }
nav a:hover { text-decoration: underline; }
h1, h2 { color: #222; }