Button with explicit CssClass no longer styled by Grid

[Peter]

Inside an EditItemTemplate of a Grid I have two buttons:

<div>
    <asp:Button runat="server" ID="btnSave" CommandName="Update" Text="Save" OnClick="btnSave_Click" />
    <asp:Button runat="server" ID="btnCancel" CommandName="Cancel" Text="Cancel" CssClass="floatRight" />
</div>

The first Save button is placed inside a "rfdSkinnedButton" anchor tag and has rounded corners etc.
The second Cancel button is not automatically styled this way. Seems its explicit CssClass overrides this behaviour. What is this behaviour called? Grid skinning?

How do I float my Cancel button right but still get the rounded corners etc?