Here's how it breaks down:
* De: A preposition meaning "of" or "from".
* Nada: Meaning "nothing".
So, literally, "de nada" means "of nothing." It is a way of saying that the help or service provided was not a big deal, and therefore, you are not owed any thanks.
Here are some other common ways to say "you're welcome" in Spanish:
* No hay de qué: This is a more formal way to say "you're welcome".
* No te preocupes: This means "don't worry" and can be used as a casual way to say "you're welcome".
* De acuerdo: This means "okay" and can be used in informal situations to acknowledge that you have helped someone.