Overview

The five navigation components, the two that take their class on the wrapper, and the landmarks none of them supplies.

Five components for moving around a site.

PageClassPurpose
Nav.navThe base navigation list
Nav title.nav-titleA label above a group of links
Skip links.nav-accessibilitySkip navigation for keyboard and assistive technology
Breadcrumb.breadcrumb-wrapperThe breadcrumb trail
Pagination.paginationPage navigation

Two of them take the class on the wrapper

.breadcrumb-wrapper goes on the <nav>, not on the <ol> inside it. .nav-accessibility goes on the list itself, but only alongside .nav. Neither is guessable from the name, so check the page before writing the markup.

None of them supplies the landmark

<nav>, aria-label and aria-current are yours to write. A page with three navigation regions and no labels on them is harder to use with a screen reader than a page with one, which is the usual reason to add them.

.item means two different things

In pagination, .item is a page number. It is unrelated to the .item card unit mentioned throughout the Content section, which is not defined in this package at all.