note about nested nav

README.md

@@ -10,6 +10,10 @@ Always remember to check for changes before starting work, and sync your changes
 
 Please import images in the "Media Library" tab - uploading them directly via post creation seems to create issues with the image pathing.
 
+## Nested navigation
+
+To create *accessible* nested navigation, make sure to turn the "Permalink" setting under the "Navigation" tab OFF for the top level of the nested section. This ensures that the menu can be clickable to open rather than hover-able.
+
 ---
 
 ## full drone/submodule setup from scratch