Variable content div height using css with fixed header and footer

Question

I\'m having a bit of trouble with some CSS, and am seeking some help from this wonderful community.

I am trying to build a layout containing the following elements:<

Answer 1

Does this fiddle meet your requirements? I couldn't quite tell whether you wanted the footer to always be at the bottom of the page or not.

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Update

This fiddle has the footer always at the bottom.