How can I apply this to a contentPlaceHolder in ASP.net?

Question

#control {
position: absolute;
right: 0px;
top: 0px;
}

Answer 1

You cannot. That's because ContentPlaceHolder does not render to anything on a page.

You can however wrap a div around it and then apply the styles to it:

<div class="control">
    <asp:ContentPlaceHolder runat="server" ID="Content" />
</div>