Navbar - Nest burger elements in Nav Bar, and switch Nav Menu direction

Thank´s for implementing the new Nav Bar, awesome feature. To be sure you have something to do over there at Webflow, here´s a question:

I want to create a menu sticking to the device´s bottom (position: fixed; bottom; 0px) and have multiple “hamburger buttons” so that they act like menu buttons. When pressed, the Nav Menu folds out, but upwards, not like it usually does; downwards.

I got everything in place except the upwards transition on the Nav Menu. Is it possible for me to change it?