Equalizer landing page using Bootstrap customized with SASS

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

This is my first challenge using Bootstrap customized with SASS. I'm very proud, because I prefer CSS Vanilla, but It's important to learn Bootstrap. I would like to have used more Utility API of the bootstrap.

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

It's difficult replicate the challenge using pure Bootstrap, then we use the SASS, but It's important to apply the correct Bootstrap + SASS, in other words, use variable, mixins, themes avalilbe in Bootstrap, not only create the new classes in SASS. It looks like very hard work to who is accustomed with CSS.

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

I would like feedback about the use Bootstrap + SASS.