Responsive age calculator app using react, framer-motion, tailwindcss

What I found difficult when developing this app was calculating the age and the error states. I am also unsure if there are still bugs, but if ever you found any please do comment it. One area I am not sure in my code is the animation part in lines 105-114 and 120-129. What I did here is using setTimeout() to delay the setState and the animation, that is what I did there to animate it and I am also not sure if this the optimal way of doing it. That would be all thank you!