The responsive layout allows a direct adaptation of the Pageflow to the screen size of any given device. You can check it beforehand in the editor. To do this, click on the small grey bar between the preview and editing windows and drag the window to the left. The image section and typography automatically adapt to the narrower format.
The display and the font will automatically adapt to the smaller format and instead of a navigation you will see an overview of the chapters. Make sure that you choose the right picture detail for the page. To do this, click on „Files“ and then click onto the blue area with the white frame.
Another way to check cross-device display is to use the developer tools in Chrome.
With the right mouse button and a click on "Inspect" you have the possibility to simulate the view for different mobile devices in portrait and landscape mode.