Codrops has shared a Multi-level Push Menuexperiment with us. They tried to explore the possibility of creating a nested multi-level menu, something that could be quite useful for menus with lots of content like navigations of online stores.
The result is a “push” menu that can (theoretically) contain infinite nested sub-menus. When opening a sub-level, the whole navigation pushes the content more, allowing a slice of the parent menu to be visible. Optionally, this slice can be visible or not, in which case the sub-menu will simply cover its parent.
The main idea is to increment the value for the translate so that we guarantee that the sub-levels are not shown once we push everything a bit more for showing the slices of the parents. Please note that this is using 3D Transforms which only work in modern browsers. You will find a fallback example for non-supporting browsers in the end of the component.css file.