Mobil-first Bento grid with HTML & CSS

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

Proud to have completed yet another challenge. If I had to do things differently, I'd maybe use the IDs of the section HTML elements to style the different cards, because in the end it's quite a mess in my css classes.

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

The singularity of each element forced me to add numerous classes that carry only one or very few css properties.

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

A better way of stylizing the whole thing (without using a css framework) to make it simpler, more readable and more efficient (fewer lines). I'm open to any criticism that will help me improve.