body { font-family: Arial, sans-serif; margin: 0; padding: 0; background: #f4f4f4; }
nav { background: #333; color: #fff; padding: 10px; }
nav a { color: #fff; margin-right: 10px; text-decoration: none; }
footer { background: #222; color: #fff; text-align: center; padding: 10px 0; position: fixed; width: 100%; bottom: 0; }
h2 { margin-top: 40px; text-align: center; }
p { text-align: center; }