Thanks to both of you for looking but so far not much luck.
It works on my iPad 2 and my iPhone 4.
It’s OK on Safari
 no luck with display:block
My vendor prefixies are OK
I tried a container with a float + border-radius (at the moment it’s still on the first image)
Interestingly, on the iPad Mini I can see that the circular image (hand logo) in the header is OK.
Man, I wish I could get paid for code-staring – I’m the Grand Master of code-staring!
 Here’s the evidence that the top image is behaving well: http://postimg.org/image/xuf6w4bdh/