Is it possible to overlap several layers?

Hello!
I am looking for a way to overlap two or three layers with the mouse over parallax, Is there a way to do it ?
I tried to do it by writing the code for the 2nd image into the code for the first image but it’s not working :

[nk_awb awb_type=”image” ….> image 1]
[nk_awb awb_type=”image” … > image 2]
[/nk_awb]
[/nk_awb]

Thanks.

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