Here's a question for you that I'm curious about:

Do you validate your HTML? (For example, using the Nu HTML Checker https://validator.nu/ or the W3C Markup validator https://validator.w3.org) And why?

#HTML

Validator.nu - Nu Html Checker

@SaraSoueidan
Yes. And the Schema validator.
I do it for the same reason I check the spelling on my pages; professionalism.