Responsive implementation with some animations!

I learned how to build a useInterval linear-gradient background which adds a smooth animated background button, although I am not really proud of the result, it's good for a start. I also implemented for the first time a react-intersection-observer delay-chained animation series on the initial load. This is not a pixel perfect solution, but it's something. I found it a bit challenging implementing the whole responsiveness. Let me know of any bugs and improvements!