Function offcanvas 

pub fn offcanvas<F>(
    id: &str,
    placement: OffcanvasPlacement,
    title: &str,
    body_fn: F,
) -> Element<Div>
where
    F: FnOnce(Element<Div>) -> Element<Div>,

Create a Bootstrap offcanvas.

Example

use ironhtml_bootstrap::offcanvas::{offcanvas, OffcanvasPlacement};

let oc = offcanvas("sidebar", OffcanvasPlacement::Start, "Sidebar", |body| {
    body.text("Sidebar content here")
});
assert!(oc.render().contains("offcanvas"));