Editing a regular DIV with same classname as the slider's mask lets us create different behaviours on different breakpoints.
The only downside is that editing the children elements of the Slider on desktop (or while the element is defined as a Grid - a bit tricky.
When your bath soap bar gets too small to use, don't throw it away! open the next bar, and when you finish showering, stick the small old bar to the back of the new bar. Onces they both dry, they will become one.