Not an Native English speaker, but will do my best.

CSS only, meaning coordinate variables are hard coded.

But it is probably possible.

Perspective Pop-out Background lifts to an XY position where the coordinates is based as to where it is positioned on the container.

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Items on the most far side are elevated with either positive or negative X position depends which side it is.

Same principle those located on the middle, items are adjust by Y axis and a constant zero X axis.

Static Pop-out Background lifts to an XY position where the coordinates is based as to where it is positioned on the container.

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