FAQ accordion html/css/js solution

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

• For first time ever using js in practice.
• Next time, hopefully, I'll try to make better decisions and make things faster.

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

• Made text smaller than browser allowed me to with font-size via transform: scale(). This has been a problem for most of my challenges, but I haven't done anything to solve it, but here I am.

• Some struggle with js took place, but I overcame just by thinking more time than I should have for the solution.

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

Animation from display: block; to display:none; that would work in every browser. (My works neither.)