Function navbar 

pub fn navbar<F>(
    brand: &str,
    expand: NavbarExpand,
    id: &str,
    f: F,
) -> Element<Nav>
where
    F: FnOnce(Element<Ul>) -> Element<Ul>,

Create a Bootstrap navbar.

Generates the standard responsive navbar structure from Bootstrap docs.

Example

use ironhtml_bootstrap::{navbar::navbar, NavbarExpand};

let nav = navbar("Brand", NavbarExpand::Lg, "navbarNav", |nav| {
    nav // add nav items here
});
assert!(nav.render().contains("navbar-brand"));