QR-code-component using flexbox properties

Hi there! I recently completed a challenge and would really appreciate your feedback on my solution. I’m particularly looking to improve how I structure my code and apply styling properties like margin and padding more effectively. If you notice areas where the spacing could be more consistent, the layout cleaner, or the overall responsiveness better, I’d love to hear your suggestions. I'm also open to any tips on modern CSS practices, accessibility improvements, or anything else that could help me write cleaner and more efficient code. Thanks so much for taking the time to review my work!