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A very useful writeup on positioning in CSS has been posted at Stopdesign. It details how nested positioned elements relate to on another. I hadn’t really thought about this before, but it has cleared up a few poitioning problems I’ve had for a while.

I didn’t realise that elements that are positioned become the point of reference for positioned elements inside them, taking over from the browser window. Not knowing this lead to some headaches when I was doing the current design of dx13, however I was able to work around the problems. Knowing this positioning mechanism should prove useful in future projects. Hmm, ideas…