Positioning An Element Above All Other Elements and Off Screen Initially

No code for this one but a question. I’m trying to create a custom animation which is a stack of 3 elements that slide in from the bottom of the screen. How would I go about positioning it above all other elements so that it isn’t obscured from being viewed. Initially it is positioned off the screen, please advise.

I assume that by “above” you mean in front of?
You can stack multiple widgets on top of each other using the Stack widget (Such that your current widget tree would and your new widget with the 3 elements would form a stack’s children, in your case). The sliding animation could be done using either the Transform.translate or the Positioned widget.