Dear @LN
it is very simple to code that script yourself:
Basically you just need a simple jQuery function which runs when the page gets loaded.
http://laytheme.com/documentation.html#custom-javascript
It should add a couple of classed to some elements which are related to the menu. As well it should change some CSS values to make it visible.
Have a look at the inspector (right click on menu -> inspect element with Chrome).
1_1578570940414_Bildschirmfoto 2020-01-09 um 12.53.22.png
0_1578570940412_Bildschirmfoto 2020-01-09 um 12.53.16.png
Hope that helps!
Best!
Marius