Responsive Landing Page using pure html, css and js

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

Completing this one purely on vanilla css as it had many features to add and I would like to use frameworks from now onwards as so not to start everything from start next time.

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

I had difficulty changing svg color to provide interactivity because I put them as image and had to re-do them. I found googling that it helps to use svg file as is or to use bootstrap/w3/google icons.

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

I would like help on which framework should I choose to continue on and from my research I found developers reuse components from other projects. Does that mean we can also copy from other websites containing familiar layout/animation to the one we need? Or should I have to do everything from scratch? Or to which level can I copy their components/ layouts? Feedbacks are appreciated.