First page cover only

[TomaszOlek]

Dose anyone know how to make so that the first page is only a cover?

Something like this:

I was able to do this with fillers as first and last page but on portrait mode, the first page and last page are invisible

I was also trying to add statement so that the filler only shows on desktop
{!isMobile && <Filler />} {children} {!isMobile && <Filler />}

But then I'm getting the error:
React.cloneElement(...): The argument must be a React element, but you passed null.

[TomaszOlek]

to be clear, using showCover={true} dose not fix the problem

[TomaszOlek]

Never mind, I was providing startPage which was wrong and I had the prev button disabled 😉