I’ve search for a demo of Split Panel and also for an animated sub menu.
I found some ppl who try to do some work about it, but nothing seems to work as i wanted.
I also wanted the split panel to show only on tablets. (try resizing the demo…)
Here is a link for what i’ve made: (only the first menu is connected with his sub menu but it’s just a POC, you can take it and add as many sub menus as you like