Apologies if I’ve missed it elsewhere. When I use the test button in “The Default Workspace”- “Preview Browser”, the small one that sits toward the right at the top of the working page, to have a look at what the website will look like on computers once published - there are small, narrow slits of curved white on the two bottom corners - left and right. Both when I upload my own background image, and when I use the in-house background solid colours. Is this how it is supposed to look whilst building the site before publishing? I’m sure it must be a simple thing. Many thanks in advance.