Here’s a list of templates that support this option. Cut Slits Use craft knife to cut slits in top corners of triangles. Banners that display behind the header Banners in the following templates can display behind the site header content, such as the site title and page navigation. For site-wide banners, the Fix Position setting won’t appear on some mobile devices, including iOS. Site-wide banners should never be larger than 2500 pixels, as this can cause issues on mobile.