Content Slider doesn't fill the height of the row

Hi All,
When using the content slider I can’t get the slide to expand to fill the row. I have the row set to 75% of the screen size but I can’t see a way to set the slide to fill it.
I can use minimum height but that doesn’t adapt to the screen size.
Is there any way to do this?

Screenshot 2019-10-18 at 19.02.51