Acrobat opening and filling screen too large

when open acrobat or when open pdf created anywhere, fills screen , can't figure out how make smaller before. went acrobat preferences , deselected full screen, still fills screen. didn't until recently. os el cap.  can tell me how make smaller was?

hi lenore,

 

please try steps in below mentioned kb article:

blank screen appears on top of acrobat window , acrobat freezes | mac os

 

if in case getting else, please share screenshot.

 

thanks,

abhishek

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