Horizontal scroll / bug?

I’ve created a horizontal cms section for this website, I have put an absolute div over top to create a gradient on the righthand side, when previewing the website on Safari there seem to be 2 grey boxes showing up? Any thoughts to what this could be?

Arc is my default browser and they do not show up on that.

Here is my public share link: https://seaworks-dev.webflow.io/

Share your read only link so we can help