如何将背景img放在div中的img前面

I have a div which has a background-img and and img element that is inside this div. I want the background-img to be shown on top of the img. Both images are positioned relative. I know this sounds a little weird, I mean this is a "background" image, but if there is any way for doing this that would really help me This is my code in a simple way:I have a div which has a background-img and and