media query for responsive website

What are you most proud of, and what would you do differently next time?

• For the first time I have used figma without knowing how to use it
• I have created this website using tag only but if i have to make changes then i will use grid or flex to design QR component
• Successfully created responsive desing.

What challenges did you encounter, and how did you overcome them?

Learned how to design a responsive website

What specific areas of your project would you like help with?

I am looking for feedback on how I optimize my css code