No worries, thanks for the clarification!
We don’t yet have support for desktop-sized fullscreen stories, but we’re tracking this enhancement on GitHub (you can subscribe to updates if logged-in on GitHub). It’s nut currently a priority though, as our focus is on first making the creation of smartphone-targeted stories as great as possible.
With that said, we’d love to hear more about your goals / use case with such a feature, so we can better understand our users’ needs and re-prioritize issues if needed.