White border in Storyline block imported to Rise360

Hello everyone!

I´ve created some Storyline blocks to add them to my Rise courses. I'm trying to create a "seamless" look by matching the background colors for the Storyline block and Rise section. However, I'm getting a white border on the top and bottom. I've tried to change the size of the Storyline block, but I've been successful

Do you have any solutions to fix this?

Thanks!