body { font-family: Arial, sans-serif; margin: 0; padding: 0; background: #f8f8f8; color: #333; } header, footer { background: #004080; color: #fff; padding: 20px; text-align: center; } nav { background: #ccc; padding: 10px; text-align: center; } nav a { margin: 0 15px; text-decoration: none; color: #004080; } main { padding: 20px; } ul { list-style-type: square; } footer a { color: #fff; }