Things you must know:
All functional components or functions, apart from those provided by create-react-app, are going to be written as arrow functions.
You need to know the basics of React to understand this article. (You could check out React Documentation.)
This article does not involve deploying the to-do list app.
For those who would like to check out the real code, here’s the link to that.
You could also access the live app here.
Since this is just a React tutorial, I am just going to drop the links to the CSS files for each component:

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