"cutted" lightbox on a smartphone

do you have experience with the problems of the size / appearance of lightbox on a smartphone?
the lightbox is shown in the middle but only central part of it - no possibility to move to the left or right side of the lightbox in order to see even action buttons to close it or to save event. same issue in both modes - horizontal and vertical screen.

Is this issue with the styles?
If you have a “working” exmaple of the lightbox that can be also used in smartphone - could you please share the respective styles to be set.

thank you, regard.

problem is still open - thank you a lot for any advise
Kind regards

Existing version of scheduler component is desktop oriented, it is not adapted for mobile devices.