responsive landing page using html/css

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

i am proud of the ability i had to reproduce this page and next time i'll try to do it faster than this time.

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

my biggest challenges was to guess the right dimensions to use but i tried my best as you can see .

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

if someone can have a tips to know exactly the dimensions you need when you are looking at the picture.