body { font-family: 'Arial', sans-serif; background-color: #f4f4f4; color: #333; margin: 0; padding: 0; text-align: center; } header { background-color: #0056b3; color: white; padding: 20px; } main { margin: 20px; padding: 20px; background: white; box-shadow: 0px 4px 8px rgba(0, 0, 0, 0.2); border-radius: 8px; } footer { background-color: #ddd; padding: 10px; margin-top: 20px; }