diff --git a/footer.php b/footer.php
index 509e8b0..789ea81 100644
--- a/footer.php
+++ b/footer.php
@@ -103,9 +103,9 @@ if ( $pb_network_contact_form ) {
 				<?php /* translators: %s Pressbooks */ ?>
 				<p class="footer__pressbooks__links__title"><a href="https://pressbooks.com"><?php printf( __( 'Powered by %s', 'pressbooks-aldine' ), '<span class="pressbooks">Pressbooks</span>' ); ?></a></p>
 				<ul class="footer__pressbooks__links__list">
-					<li><a href="https://pressbooks.education/help-and-support/"><?php _e( 'Guides and Tutorials', 'pressbooks-aldine' ); ?></a></li>
+					<li class="footer__pressbooks__links__list-item footer__pressbooks__links__list-item-guide-tutorials"><a href="https://pressbooks.education/help-and-support/"><?php _e( 'Guides and Tutorials', 'pressbooks-aldine' ); ?></a></li>
 					<?php if ( $contact_link ) : ?>
-						<li>|<a href="<?php echo $contact_link; ?>"><?php _e( 'Contact', 'pressbooks-aldine' ); ?></a></li>
+						<li class="footer__pressbooks__links__list-item footer__pressbooks__links__list-item-contact">|<a href="<?php echo $contact_link; ?>"><?php _e( 'Contact', 'pressbooks-aldine' ); ?></a></li>
 					<?php endif; ?>
 				</ul>
 			</div>
diff --git a/inc/helpers/namespace.php b/inc/helpers/namespace.php
index 5785142..1474253 100644
--- a/inc/helpers/namespace.php
+++ b/inc/helpers/namespace.php
@@ -167,64 +167,94 @@ function get_available_subjects( $catalog_data ) {
  * @return string $items
  */
 function get_default_menu( $items = '' ) {
+	$id_items = [
+		'prefix' => 'nav--primary-item',
+		'Home' => 'home',
+		'Contact' => 'contact',
+		'SignIn' => 'sign-in',
+		'SignUp' => 'sign-up',
+		'Admin' => 'admin',
+		'CreateANewBook' => 'create-book',
+		'MyBooks' => 'my-books',
+		'SignOut' => 'sign-out',
+	];
+
 	$link = ( is_front_page() ) ? network_home_url( '#main' ) : network_home_url( '/' );
 	$items = sprintf(
-		'<li><a href="%1$s">%2$s</a></li>',
+		'<li class="%3$s %3$s-%4$s"><a href="%1$s">%2$s</a></li>',
 		$link,
-		__( 'Home', 'pressbooks-aldine' )
+		__( 'Home', 'pressbooks-aldine' ),
+		$id_items['prefix'],
+		$id_items['Home']
 	) . $items;
 	if ( get_option( 'pb_network_contact_form' ) ) {
 		$items .= sprintf(
-			'<li><a href="%1$s">%2$s</a></li>',
+			'<li class="%3$s %3$s-%4$s"><a href="%1$s">%2$s</a></li>',
 			'#contact',
-			__( 'Contact', 'pressbooks-aldine' )
+			__( 'Contact', 'pressbooks-aldine' ),
+			$id_items['prefix'],
+			$id_items['Contact']
 		);
 	}
 	if ( ! is_user_logged_in() ) {
 		$items .= sprintf(
-			'<li><a href="%1$s">%2$s</a></li>',
+			'<li class="%3$s %3$s-%4$s"><a href="%1$s">%2$s</a></li>',
 			wp_login_url( get_permalink() ),
-			__( 'Sign In', 'pressbooks-aldine' )
+			__( 'Sign In', 'pressbooks-aldine' ),
+			$id_items['prefix'],
+			$id_items['SignIn']
 		);
 		if ( in_array( get_site_option( 'registration' ), [ 'user', 'all' ], true ) ) {
 			$items .= sprintf(
-				'<li><a href="%1$s">%2$s</a></li>',
+				'<li class="%3$s %3$s-%4$s"><a href="%1$s">%2$s</a></li>',
 				network_home_url( '/wp-signup.php' ),
-				__( 'Sign Up', 'pressbooks-aldine' )
+				__( 'Sign Up', 'pressbooks-aldine' ),
+				$id_items['prefix'],
+				$id_items['SignUp']
 			);
 		}
 	} else {
 		if ( is_super_admin() || is_user_member_of_blog() ) {
 			$items .= sprintf(
-				'<li><a href="%1$s">%2$s</a></li>',
+				'<li class="%3$s %3$s-%4$s"><a href="%1$s">%2$s</a></li>',
 				admin_url(),
-				__( 'Admin', 'pressbooks-aldine' )
+				__( 'Admin', 'pressbooks-aldine' ),
+				$id_items['prefix'],
+				$id_items['Admin']
 			);
 		} else {
 			$items .= sprintf(
-				'<li><a href="%1$s">%2$s</a></li>',
+				'<li class="%3$s %3$s-%4$s"><a href="%1$s">%2$s</a></li>',
 				user_admin_url(),
-				__( 'Admin', 'pressbooks-aldine' )
+				__( 'Admin', 'pressbooks-aldine' ),
+				$id_items['prefix'],
+				$id_items['Admin']
 			);
 		}
 		$user_info = get_userdata( get_current_user_id() );
 		if ( $user_info->primary_blog ) {
 			$items .= sprintf(
-				'<li><a href="%1$s">%2$s</a></li>',
+				'<li class="%3$s %3$s-%4$s"><a href="%1$s">%2$s</a></li>',
 				get_blogaddress_by_id( $user_info->primary_blog ) . 'wp-admin/index.php?page=pb_catalog',
-				__( 'My Books', 'pressbooks-aldine' )
+				__( 'My Books', 'pressbooks-aldine' ),
+				$id_items['prefix'],
+				$id_items['MyBooks']
 			);
 		} elseif ( in_array( get_site_option( 'registration' ), [ 'blog', 'all' ], true ) ) {
 			$items .= sprintf(
-				'<li><a href="%1$s">%2$s</a></li>',
+				'<li class="%3$s %3$s-%4$s"><a href="%1$s">%2$s</a></li>',
 				network_home_url( '/wp-signup.php' ),
-				__( 'Create a New Book', 'pressbooks-aldine' )
+				__( 'Create a New Book', 'pressbooks-aldine' ),
+				$id_items['prefix'],
+				$id_items['CreateANewBook']
 			);
 		}
 		$items .= sprintf(
-			'<li><a href="%1$s">%2$s</a></li>',
+			'<li class="%3$s %3$s-%4$s"><a href="%1$s">%2$s</a></li>',
 			wp_logout_url( get_permalink() ),
-			__( 'Sign Out', 'pressbooks-aldine' )
+			__( 'Sign Out', 'pressbooks-aldine' ),
+			$id_items['prefix'],
+			$id_items['SignOut']
 		);
 	}
 	/* @codingStandardsIgnoreStart $items .= sprintf(