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A key challenge for me was deciding which CSS unit to use for each element. Faced with options like px, %, rem, and em, I had to do some research into the different best practices. For example, I found conflicting advice online—some developers argue that px is best for margins and padding for precise control, while others insist on rem for better scalability and accessibility.

I'm open to any and all feedback, but I would especially appreciate some guidance on my CSS. I'm curious if there are more modern or efficient techniques I could have used, or any best practices for structuring my code better. Also, since design isn't my strongest skill, any comments on the visual presentation—like spacing, typography, or overall harmony—would be extremely helpful.