Responsive Landing page using React JS

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

I am proud of that I have created this react landing page

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

I encounter the following challenges:

-Writing CSS for each component

-using hooks & its implementation

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

I would like you to recommend me to write css faster for react & also how to implement hooks & divide the components with much simplification.

-Feedbacks are highly valuable & appreciated