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I tried to solve this challenge with React 18.0.

Subjects I have difficulty with:

• It took me a lot of time to write custom CSS

A few questions I would like to ask those who will examine the project;

• How can custom CSS be written faster without wasting time?
• How can component designs on React be further improved?

Since there is only one field in the code and there is no API post request, I did not include the Email field in a <form/> tag. Do you think this is something that disrupts accessibility and best practice?

any advice welcome :D