Div not expanding even with content inside

Question

I have a stack of divs inside of each other, all of which have an ID which specifies CSS only.

But for some reason the surrounding DIV tag only expands to it\'s anoi

Answer 1

Add <br style="clear: both" /> after the last floated div worked for me.

Answer 2

div will not expand if it has other floating divs inside, so remove the float from the internal divs and it will expand.