Auto Div height depend on another one

Question

I have the following scenario I want Div2 height to resize depend on the content of Div3 how I can do that ?

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.      DIV1          


        

Answer 1

Try using the CSS attribute display: table-cell. See this jsFiddle.

EDIT

Using floats, try this updated jsFiddle
Or equally this one. Both provide an elegant solution.