Optional
cssThe position where the hover should appear. Note that the hover service will try to invert the position (i.e. right -> left) if the specified content does not fit in the window next to the target element
Optional
visualA function to render a visual preview on the hover. Function that takes the desired width and returns a HTMLElement to be rendered.
Additional css classes that should be added to the hover box. Used to style certain boxes different e.g. for the extended tab preview.