10 - Hiding elements

Hello everyone, I’m coming today with another question. When it would help me use hiding elements, what I want so say is… if I want to hide an element, better I should’n use it in my code. Am I right? Why I should write a pair of code and then hide it instead of not writing it? What is the sense of this concept?

This is one of the many situations when you may want to hide your elements:

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Thanks a lot, it helped me a lot! I haven’t yet reached this point