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I would like to know what they think of my design and implementation.

I had some difficulties when adding animations, since I don't have much knowledge about them, just add a few simple ones. I look forward to your feedback

I accept feedback for my code.

I had problems with the edges of the inputs but in the end I managed to make it look its best, thanks to the help of internet forums

I found this exercise very easy... I don't know if the way to write the code is the best, I'm a beginner

--> Can you suggest to me what are the best practices for writing my code? --> Is it right to use flexbox to align all the things in my document?