Container Problem

I’m trying to use a container, but all I see is the bottom bar. Not sure what I’m missing.

#schedulerDiv { width: 50%; height: 50%; }
            <asp:Label runat="server" ForeColor="Maroon" Font-Bold="true" ID="lbl1" Visible="false"></asp:Label>
<div id="schedulerDiv">

You set the size for scheduler container in percent. Make sure that body has 100% height.

html, body{