A JavaScript (React) Calculator

This is actually a freeCodeCamp challenge https://www.freecodecamp.org/learn/fr.... The code is actual trivia with a state machine to track the various states and React (this could easily be done with pure JavaScript without React) is used to handle each states. There is no CSS framework involved, just a little bit of flexbox styling. There is working site you can try it out at https://e-tinkers.github.io/freecodec.... The code is available at my github https://github.com/e-tinkers/freecode....