How to remove grey space between qode slider and first content block?

Hello!

I build the website https://www.clapy.co for my client but I’m having a small problem.

I’m working parallax sliders but when I scroll down on the page there is this weird grey space between the slider and my first block of content of the plage. I tried so many different CSS codes but can’t figure it out. Hopefully someone else can?!

BTW I’m using the Bridge theme and Qode Slider.

Thank you in advance!