Responsive Two-Tier Navigation with Breadcrumbs

This Tailwind CSS code creates a responsive two-tier navigation with breadcrumbs. The outer <nav> element contains an ordered list with breadcrumb links. The first breadcrumb link is a "Home" icon that is visually hidden. The second breadcrumb shows the parent "Projects" page. The third breadcrumb shows the current "Project Nero" page. The breadcrumbs use Tailwind utilities like flex, text-gray-500, hover:text-gray-700, and ml-4 to style the links. The page title link has aria-current="page" for accessibility. The nav has an aria-label for screen readers. Overall this provides a clean, responsive breadcrumb navigation indicating the hierarchy of pages.