How to change the mask styles height and width, instead fullscreen in <TourProvider> component?

[caturbgs]

How to achieve the mask style width and height instead of the default value fullscreen using the Tour component? I'm using the Tour component to easier dynamically set up the layout. AFAIK you can use custom component Mask but i'm afraid it can't be setup dynamically like in Tour component.

After digging the down rendered HTML using Tour component, I've found the rendered mask is always full screen setup inside the svg element here.

Is there any way to custom the height and width of Mask, I want to create mask like rounded and with custom size like this.

Thanks!