How can I remove default top navbar?

1

I need to remove the top default nav bar above header. Unable to find a way for this. I can turn of debugger but not top default green header.

2

It’s just html / css, comment it out.

3

From which file? In home.ctp I replaced my own html, css. But it is still
there.

4

/src/Template/Layout/default.ctp