How to make graphics scale for all size screens? Newbie question

Unity Engine
1

How do I make graphics scale with same proportions for all size screens? Newbie question.
Android and, iOS phones and pads, etc.

2

I guess you’re asking about 2D graphics.
Here’s a link:
https://docs.unity3d.com/Manual/HOWTO-UIMultiResolution.html

3

Thanks Alexsandrk