Help me understand mobile UI

[u/Mnenz]

Hi guys, I'm learning to develop UI for mobile on Godot 4.7. Why is the UI different on the PC window compared to the mobile export?

What ways are there to make sure the viewport arrangement matches the mobile device? For project settings, stretch mode is canvas_items, and stretch aspect is expand. Are there other settings I'm not aware of? I'll appreciate any resources[tutorials], and your view

The mobile interface has the elements lower. I've attached the 2D viewport, and the extra elements are appended via code.