Ticket #60374: 60374.diff

src/wp-content/themes/twentysixteen/css/blocks.css

@@ -325 +325 @@
         display: list-item;
 }
 
+/* Navigation */
+
+.wp-block-navigation-item .wp-block-navigation-submenu {
+        margin-left: 0;
+        margin-right: 0;
+}
+
+.wp-block-navigation button {
+        background: transparent;
+        padding-top: 0;
+        padding-bottom: 0;
+        outline-offset: 0;
+        letter-spacing: normal;
+}
+
+.wp-block-navigation__responsive-container.is-menu-open {
+        padding: 0 1rem;
+}
+
 /*--------------------------------------------------------------
 5.0 Blocks - Widget Blocks
 --------------------------------------------------------------*/