Yes, I borrowed the post’s title from this book but it is absolutely perfect for my subject.
I have been working on a project that uses large background images as an intrinsic part of the design. While I optimized the images so they load reasonable fast, I failed to consider that IOS might still deem them too large! While all seemed to work fine on IOS 8, an older iPad running IOS 7 failed to display the backgrounds, making the site unusable. The solution, of course, is to use media queries and smaller images. A guideline for background images can be found here: https://developer.apple.com/library/safari/documentation/AppleApplications/Reference/SafariWebContent/CreatingContentforSafarioniPhone/CreatingContentforSafarioniPhone.html