Panel in div with rounded corners grows beyond div height when using RoundedCorners

I had originally posted this in the Atlas forum by mistake. Sorry for the double post.

I am just learning CSS so forgive me if this is something simple but I have a div that has a height of 50px. If I add a panel to that div and set it's height to 100% without the rounded corner extender it fills the div as you would expect. When I add the rounded corner extender to the panel it grows to 142px. If I remove the RoundedCornerExtender it displays correctly.

Any idea what is causing this?

Here is some sample code:

<

headrunat="server"><title>Panel expanding beyond div height.</title>

</

head>

<

atlas:ScriptManagerID="ScriptManager1"runat="server">

</

atlas:ScriptManager>

<

body><formid="form1"runat="server"><divid="Wrapper"style="vertical-align: top; width: 750px;"><divid="Header"style="vertical-align: top; background-color: White; padding: 4px;

height: 50px; width: 100%;">

<asp:PanelID="pnlHeader"runat="server"BackColor="Blue"ForeColor="White"Height="100%"HorizontalAlign="Center"Width="100%">This should only be 50px high.</asp:Panel></div><divid="Content"></div><divid="Footer"></div></div></form>

<cc1:RoundedCornersExtenderID="RoundedCornersExtender1"runat="server">

<cc1:RoundedCornersPropertiesTargetControlID="pnlHeader"Color="Blue"Radius="7"/>

</cc1:RoundedCornersExtender>

</

body>It's the Height="100%" on pnlHeader that's confusing things. If you can change that to Height="50", the results seem to be what you want.

Thanks for the thought. But wouldn't the height setting on the Header limit it to 50px? I have found a workaround by creating a cssClass for the panel and setting the height there and not using the Height=100% within the control.

My original use of the 100% within the control was working until the July CTP. Again thanks for the assistance. Something must have changed in the July CTP that caused this to happen.