If the widget isn’t displaying as expected:
Make sure you have deselected Show widget borders checkbox when you edit and paste the code into the Custom HTML widget in Design Studio.
Check that the widget has been stretched over the appropriate amount of columns and rows in the Design Studio. For example, if you’ve created a widget that is 6 columns wide in the Widget builder, ensure that the Custom HTML widget in Design Studio, where you are pasting the code, is also 6 columns wide.
Try performing a hard refresh.
If the issue continues, please raise a ticket with Fuse Technical Support.