I try to position an image on the bottom of its container with another image as a bschground. This should be my. final result.

To do this, I've inserted 2 divs with background images and the bottom element has a negative margin.
It seems to work, unfortunately, this is not responsive.

So I made another test with an image container with my pruple wave and a padding, and configure and image as a bckground.

Unfortunately, I obtain this :

I've tried changing manually in the code the property float : bottom, but It's not working.

Any idea ?
here is my. project : second section : https://prod.appdrag.com/Builder/pagebuilder.html?appId=inspiration-fe287c