Whitespace between shape divider and cover image

Hi, I still have a question about the whitespace between the shape divider and cover image.

When visiting https://www.shard.nl and you scroll down. You see a shape divider and a cover image. Also with white space between those 2 elements.
I want to remove the white space between those 2 elements.

I tried I have set the canvas and the shape divider to “remove top/bottom spacing”. In the WordPress editor, there is no white space anymore. When I publish it there is still white space.

As seen here: https://ibb.co/Snn04bb

Can you take a look at this?

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