Equalizer landing page

Hey! I am Reza 🙂 I just recently started to learn web-development and would like to get every little help out there. So if you have the time, feel free to look over my project/projects and give me some advice to get better as fast as possible.

Project #12: Some questions for this "Equalizer-Landing-Page" project:

1. Did I center everything right, or was there a easier way?
2. Was there a easier way to design some things in way less code?
3. What did I do completely wrong, and just have luck within this project?
4. What would you do different?

I appreciate it✌️