space below ngg slideshow

Hi all,
I’m using Page Builder for my articles. And if I add a NGG galery slideshow, it creates a big space below the slideshow only on small device. On my desktop, the text appears right below the galery, but on a smartphone (or if you decrease the size of the windows), it makes a bigger and bigger space between the slideshow and the text. Please have a look at one of them at:
http://lesdelicesdadriana.com/amuse-gueules/pain-brioche-viande/
Please help me to remove this useless space.
Thanks a lot