Don't Understand Error in a Style

I am trying to write a style that includes a Template following the example on [this page][1]. Here is my Style.

 &lt;Style
     TargetType=&#34;Border&#34;&gt;
     &lt;Setter Property=&#34;OverridesDefaultStyle&#34; Value=&#34;True&#34;/&gt;
     &lt;Setter Property=&#34;Template&#34;&gt;
         &lt;Setter.Value&gt;
             &lt;ControlTemplate
                 TargetType=&#34;Border&#34;&gt;
                 &lt;DockPanel x:Name=&#34;dpnl&#34;&gt;
                     &lt;Label x:Name=&#34;lblDay&#34; /&gt;
                     &lt;StackPanel /&gt;
                     &lt;ContentPresenter /&gt;
                 &lt;/DockPanel&gt;
             &lt;/ControlTemplate&gt;
         &lt;/Setter.Value&gt;
     &lt;/Setter&gt;
 &lt;/Style&gt;

The compile-time error I get is: The member "Template" is not recognized or is not accessible.

But that is exactly how the example shows it should be done.

What's wrong?

ETA: Here are the Tags I've tried: "Template", "Style", "Visual Studio" and "XAML" None are acceptable. Nothing else is appropriate so my tag is therefore useless.
[1]: https://docs.microsoft.com/en-us/dotnet/api/system.windows.controls.contentpresenter?view=netframework-4.7.1