Index: wp-content/themes/twentyfifteen/rtl.css
===================================================================
--- wp-content/themes/twentyfifteen/rtl.css	(revision 55900)
+++ wp-content/themes/twentyfifteen/rtl.css	(working copy)
@@ -846,3 +846,7 @@
 		width: calc(50% - 289px);
 	}
 }
+
+.wp-block-navigation .wp-block-navigation-item__content.wp-block-navigation-item__content {
+    padding: .5em 1em;
+}
\ No newline at end of file
Index: wp-content/themes/twentyfifteen/style.css
===================================================================
--- wp-content/themes/twentyfifteen/style.css	(revision 55900)
+++ wp-content/themes/twentyfifteen/style.css	(working copy)
@@ -6152,3 +6152,7 @@
 		padding: 0;
 	}
 }
+
+.wp-block-navigation .wp-block-navigation-item__content.wp-block-navigation-item__content {
+    padding: .5em 1em;
+}
\ No newline at end of file