title_body: which readers honor -webkit-transform CSS property?
upvoted_answer: I guess the problem is either:
  
  
  in the specific software (Moon + Reader Pro): maybe it has some bugs
  in parsing .css  
  or in the screen size of your tablet: the scale 0.25
  is too big for it
  
  
  The css you provided looks reasonable:
  
  -webkit- tags are added for compatibility with iOS readers, because those readers won't display an epub properly without this tag  
  
  -ms- tags are added for compatibility with Windows readers
  
  As your platform is Android, the first 2 tags in the following CSS should be ignored:
  
  -webkit-transform: scale(0.25);
  -ms-transform: scale(0.25);
  transform: scale(0.25);
  
  
  So your reader should parse the simple transform tag.
  
  I'd advice you to:
  
  
  Try to change the scale(0.25) to scale(0.15) or so and see if the 
  result is better.
  Write to the support of Moon + Reader Pro app and ask if there can
  be a problem in the app when rendering your specific epub.