diff --git a/packages/block-library/src/navigation/edit/index.js b/packages/block-library/src/navigation/edit/index.js
index a009ba94ce297..8240065d07f69 100644
--- a/packages/block-library/src/navigation/edit/index.js
+++ b/packages/block-library/src/navigation/edit/index.js
@@ -103,7 +103,6 @@ function Navigation( {
 	customAppender: CustomAppender = null,
 } ) {
 	const {
-		itemsJustification,
 		openSubmenusOnClick,
 		overlayMenu,
 		showSubmenuIcon,
@@ -197,8 +196,6 @@ function Navigation( {
 	const blockProps = useBlockProps( {
 		ref: navRef,
 		className: classnames( className, {
-			[ `items-justified-${ attributes.itemsJustification }` ]: itemsJustification,
-			'is-vertical': orientation === 'vertical',
 			'items-justified-right': justifyContent === 'right',
 			'items-justified-space-between': justifyContent === 'space-between',
 			'is-responsive': 'never' !== overlayMenu,
diff --git a/packages/block-library/src/navigation/editor.scss b/packages/block-library/src/navigation/editor.scss
index ed5c91fca3db5..489c028542b50 100644
--- a/packages/block-library/src/navigation/editor.scss
+++ b/packages/block-library/src/navigation/editor.scss
@@ -282,7 +282,6 @@ $color-control-label-height: 20px;
 		}
 
 		// Hide entirely when vertical.
-		.is-vertical.is-selected &,
 		.wp-block-navigation.is-selected .is-small &,
 		.wp-block-navigation.is-selected .is-medium & {
 			display: none;
@@ -320,19 +319,12 @@ $color-control-label-height: 20px;
 
 	// Show stacked for the vertical navigation, or small placeholders.
 	.is-small &,
-	.is-medium &,
-	.is-vertical & {
+	.is-medium & {
 		.wp-block-navigation-placeholder__actions {
 			flex-direction: column;
 		}
 	}
 
-	// Both selected and vertical.
-	.is-selected.is-vertical & {
-		display: inline-flex; // This makes the white box not take up all available space.
-		padding: $grid-unit-15;
-	}
-
 	.wp-block-navigation-placeholder__icon {
 		margin-right: $grid-unit-15;
 		height: $button-size; // Prevents jumpiness.
@@ -353,11 +345,6 @@ $color-control-label-height: 20px;
 			margin-right: $grid-unit-05;
 		}
 
-		.is-vertical & {
-			margin-bottom: $grid-unit-05;
-			margin-left: 0;
-		}
-
 		// Show only in big placeholders.
 		display: none;
 		.is-large & {
@@ -366,21 +353,6 @@ $color-control-label-height: 20px;
 	}
 }
 
-// When block is vertical.
-.is-vertical .wp-block-navigation-placeholder,
-.is-vertical .wp-block-navigation-placeholder__preview,
-.is-vertical .wp-block-navigation-placeholder__controls {
-	min-height:
-		$icon-size +
-		( $grid-unit-20 + $grid-unit-05 + $grid-unit-15 + $grid-unit-15 ) * 3;
-}
-
-.is-vertical .wp-block-navigation-placeholder__preview,
-.is-vertical .wp-block-navigation-placeholder__controls {
-	flex-direction: column;
-	align-items: flex-start;
-}
-
 .wp-block-navigation-placeholder__actions {
 	display: flex;
 	font-size: $default-font-size;