body { font-family: Arial, sans-serif; margin: 0; padding: 0; background: #f4f4f4; color: #333; }
header { background: #333; color: white; padding: 20px; text-align: center; }
nav a { color: white; margin: 0 15px; text-decoration: none; }
section { padding: 40px; text-align: center; }
footer { background: #333; color: white; text-align: center; padding: 10px; }