use crate::*;
/// Renders a standard page header with a title and subtitle.
///
/// Produces a consistent `div > h1 + p` structure used by every demo page
/// in the example application.
///
/// # Arguments
///
/// - `&str`: The page title text.
/// - `&str`: The page subtitle / description text.
///
/// # Returns
///
/// - `VirtualNode`: The page header virtual DOM tree.