Internet Explorer 10 doesn’t differentiate device width from viewport width, and thus doesn’t properly apply the media queries in your CSS.
I felt that Bootstrap 2.3 was too limited when it came to hide and display elements depending on device, so I extended them a bit.
I’ve recently been a bit obsessed with loading speed and I’ve done some research on how to speed up things by compressing and caching and headers etc.
Writing CSS for different devices can be a pain in the ass. With Media Queries it’s easier, if you know how to pin point a specific device.
With the launch of the new iPad all websites instantly became pixelated and ugly. All your neat images and sprites and stuff is now rubbish. You’ll need to remake it all. In twice the width and height.