Hi (sorry for my bad english)
My header don`t appear when scroll to second section (called Cuerpo A) because i think that i don’t understand the z índex concept.
https://webflow.com/design/sapiensit?preview=4bb3c3f72d71345574a1324d07ee9cc8
I saw the Nav Bar appear video and does not explain this concept.
Help please and thanks so much.
Kind regards from Spain.