Lectora course display difference between window screen and Mac screeen

tranduyngoc

Hello everyone, I have a problem and I hope someone can help me. I have 1 powerpoint file with slide size according to the size of the phone. Now I want to convert this lecture to computer size, so I set the powerpoint slide size to 16:9 ratio and then import the edited powerpoint file into Lectora.
But as far as I know, the screen ratio of Mac is 16:10 so my lecture has display problem as shown in the picture. Am I doing something wrong at any step? Or is there any option so that my lessons can be displayed correctly on all devices.
I'm using Lectora 18. Hope to get some help. Thank you very much