I see that the carousel banner is not of full width.
One reason is that your .dnd-column has padding from left & right of 20px. To fix it either you can remove the padding from the dnd-column class or you can give negative margin to you carousel div. Negative Margin is a great way to negate the padding but it is not a good practice.
Hope this will helps you out. Please mark it as Solution Accepted & Upvote to help other Community member. Thanks!