How to mention width for CKEditor inside DetailsView

Hello Friends,

I need some urgent help.

I have a CKEditor inside Detailsview control. The code is as below

<CKEditor:CKEditorControl ID="contntdesc" runat="server" Height="400px" Width="100%" Text='<%# bind("contnt_desc") %>'></CKEditor:CKEditorControl>

</InsertItemTemplate>

Some how editor is not taking its 100% of width and its appearing smaller than expected.

Please help