Responsive pricing component using Sass, BEM, and JS for the toggle

Hello!

I tried my best to match the design in this challenge. Used some semantic markup for the elements as well. Do check out my approach to switch the billing from monthly to annually in the app.js file.

I also designed a new responsive attribution footer for myself which I have put in this solution, and will be adding to all my future solutions, so I would like some thoughts on that as well!

Thanks!