I'm not sure how to do it using relative only.The content of each box is variable, so I won't know ahead of time how high each will be.Therefore, I won't know how to position the rightmost box relative to it's normal position, because I don't know what it's normal position is.The height of the leftmost box will dictate the normal position of the rightmost box. I want the tops of the two boxes to line up, but I won't know what value to use in the "top:?px" style.