Element name needed

I need to change the height of the stream, it is massively set at min-height 500px but I cannot see where to edit this. I tried ‘#ff-stream-1’ and ‘#ff-stream-1.ff-stream.ff-layout-carousel’ as customized CSS, but it does not work. In the settings itself I cannot see any option to set the height either, so I am stuck. Thanks for your support.

The page I need help with: [log in to see the link]