Hello Rizqi A ,
Thank you for your question!
To make the published content adjust to any screen resolution, you can enable the “Fit course to browser window” size option upon publishing. See the screenshot below for reference:
With iSpring course settings you can also enable Smartphone optimization, so your Quizzes, Interactions and Role-plays are opened in a special simplified mobile player. See the screenshot below for reference:
This optimization, however, does not apply to the generic PowerPoint slides, since those are rectangular by default and can't be resized/adjusted in the same way as quizzes.
Hope this helps!