Social links profile using HTML and CSS

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

I am proud I could do this challenge in just about a week of learning HTML and CSS. Might not be something big for the gurus but this is a one step achievement for me. I could do more with time

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

Getting the right colors was a challenge for me but i just tried to get any color that would be as close the original. How to center a div, the calculation of what height or width to use, confuse if i should use rem, px, vh, or the others. Still confused on how they differ from others but i just started learning CSS so i guess i will know with time

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

How to center stuffs correctly, what measurements(i don't know if this is how its called e.g rem, em, px, %, vh, vw, etc) to use and when to use them