A few weeks ago, I was at Walmart and checked my front page on one of their for-sale tablets. Sure enough, the iPad displayed it wrong and it was obvious that my custom template css file was not being loaded. I checked it later at home on my MacBook pro and it was pixel perfect.

I should have checked it on an Android or Windows tablet but I didn't think to. My gut tells me it is an Apple issue. Which is why their Safari browser continues to decline in popularity even though it is free and the default browser for their devices. Try downloading another browser for your iPad. Chrome or Firefox, for example.