How to position background image inside Hero section?

I am trying to make that diamond at the background part of the hero section alone but exactly the way it is. But it seems I made it the background image itself. How do I please fix this?

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remove the background image of the hero section and add a position relative to that same element, add an image element and give it a postition absolute and tweak the position, I’d advice you give it a 30% width and add a position relative to the grid element with a high z-index