insets
Configures insets that can be used to allow the user to scroll content below system UI elements like the notch on mobile devices.
For vertical insets (top and bottom), this adds extra space at the top or bottom of the scrolling container.
For horizontal insets (left and right), this acts as padding that pushes the content in from the sides.
Percentage values are based on the ReaderView's dimensions. Any value higher than 40% of the ReaderView's width or height will be clamped to 40%.
Note: This option currently only has an effect when using scrolling renderers (e.g., ContinuousScrollRenderer or SingleDocumentScrollRenderer).
Defaults to 0 for all sides.