Perspective match buttons from GLB model with background visualization

Content creation (3dsMax, Maya, Blender, glTF)
1

Hi! Do you know how to match perspective of buttons (from GLB 3d model) with background like this:
https://allinone.prod.resimo.io/echo/modern-mokotow/#/?app=jeff&jeff-building=A&lang=pl
Any ideas please?
BR,
Szymon

2

Not sure which button are you referring to.

Care to reproduce that in code, showing us a button that doesn’t scale as you expect?