HTML CSS

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

Hi, guys ! I am very proud with my project, because this is the first time I ever build something without the help of Youtube. I know that my code is messy and all this rem % and px are not very clear to me, and probably you will find so many mistakes, and discrepencies with the real photo, but overall I can't even describe how happy and proud I am with myself. I will go to buy me an ice cream to reward myself :D Please guys and gals, dismentle me, its only up and forward from where I am, so I can't wait.

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

some easy way to remember and understand how to use css units and also responsive design is not very clear to me yet