MyTeam multipage website using React

Hello everyone! I completed this challenge using the React library that I set up with Parcel, if anyone has any suggestion regarding the set up of this project I'll be happy to change things around. I wanted to set up React from scratch and use the router as well as practice React of course. Let me know what you think about the card flipping and the form validation. The form validation is messy as I wanted to add setTimeOut for error display but I couldn't figure out how to make a single function for it (or anything else to validate the form). Any feedback on anything is very much appreciated. Thank you!