Child div 100% height to parent auto height

Question

Im here because other similar questions couldn\'t help my particular problem.

I need right div to be 100% height all the time, where the parent

Answer 1

You can use the table-cell value of the display property in this layout and remove the float like this:

.left, .right{
    display:table-cell;
}

live demo http://jsfiddle.net/C9Kmx/34/