hi
I have having trouble with page-submenu.html as supplied. I have 10 submenu items which display fine on a large computer screen.
As the screen size is gradually reduced, some of the menu items wrap to a second row without the submenu background color extending behind the second row. Result is the first row has background color but the second row gets lost in the page background color. Creating a second row of menu items is not a problem - the background behaviour is the problem.
As the screen is further reduced in size, the hamburger menu icon takes over and works fine on mobile sized screens.
See attached file which has the number of menu items I intend to use incorporated into your original file page-submenu.html.
