Intro section with dropdown navigation

Blanket statement incoming: I've found that I keep building more and more complexity into these challenges and you have to keep going back on the things you've learned in the past to update them and find how they incorporate into the extra details your newly learned element has added. This is still messy(css) and I've broken down and rewrote it 3x already. Doing it over allowed me to rewrite where which class properties needed to go to work between the hamburger nav and mobile-first workflow.

The bigger picture here is finding how I can implement a more standard approach like BEM in my structure to help sort out the madness. I've kind of started with my class naming but need to take the deep dive to understand all the whys and edge cases where the standard is pushed.