Your cache plugin may be injecting the odd space into your AMP markup during minification.
I was struck by how blatantly Microsoft ripped off Google Chrome, a browser I’ve been using since the end of 2008. This is okay with me, because I love Chrome – but if I were Google’s Chrome browser department, I’d probably be upset. That said, I’ll show some examples below of the similarities between the new IE9-Beta & Chrome, Firefox.
Elastic Layout is important to me because in an era where one viewer may have a 800 x 600 pixel monitor, another may be viewing it on a wall-sized display via high-def projector. I wanted a design that will render consistently across all displays (with the possible exception of mobile-phone browsers), and it seems that entering sizes in pixels or percentages presents other limitations.