Grid, Flexbox, BEM, Mobilefirst approach, Sass and Vanilla Js

This was the most fun I had with the challenge.

My question for the community is how do you like my Js approach to the challenge? Is it a better idea to make a separate class for the light and dark card theme and make a separate function?

I don't have any specific questions for the community but a code review would mean a lot! :D

Also shoutout to the incredible youtube videos that helped my finish this project with this input hack: https://codepen.io/mburnette/pen/LxNxNg, and Kevin Powell for theme toggle https://codepen.io/kevinpowell/pen/EMdjOV