I have these two div
<div id="newUpContainer" style="width:100%">
<div id="onlineBookingDiv" style="float: right; width:40%; margin-top:20px;">
the inside div has table, which has a height of almost 560px.
I am using firebug and Google Chrome to check the size of the parent div.
but I got that the size is 0. Although the child div has a table as you see in this picture