Tip calculator app using React and TailwindCSS

Hey @MatheusVSN Congrats for the solution. I just have some small tips.

1. Break it into small components. In my view, all the comments on Main container could become a separated component.
2. I see that you are using flex in some components. My opinion is that you should use more, and also explore the usage of flex + gaps it will help you to level up and you won't need to use margins in everywhere. It will make your projects more consistents and easy to manage.