Zoe uses one little case study to contrast two different CSS techniques: display-table and flexbox. Flexbox definitely comes out on top when it comes to true source-order independence.
Trent offers some excellent advice for dealing with the effects of the iPad’s retina display on your websites. That advice is: don’t panic.
See now, this is why liquid layouts are the way to go.
When I linked to the Toast framework the other day, I mentioned that I was intrigued by its use of inline-block for layout. Here’s a more detailed analysis of how display: inline-block works, along with some caveats.