UI Border with an image, but without stretching it (or how to set a main menu background)

Development Asset Creation
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1

Hi!

I want to create a Main Menu with a background image. To do it, I’m using a border as background.

My problem is that the image get stretched and looks ugly.

Is there any way to keep its aspect ratio and not stretch it?

Maybe, there is a better way to set a background image.

Thank you!