title: How to change default Xaml TextBox fontsize
body: <p>In my file.xaml, how can I set the TextBlock default size, so that I don't have to include that attribute in the TextBlock element?</p>
  
  <pre><code>&lt;UserControl.Resources&gt;
   &lt;!-- how?/can i set the default font size for textblock element here? --&gt;
  &lt;/UserControl.Resources&gt;
  
  &lt;Grid&gt;
      &lt;StackPanel&gt;
          &lt;TextBlock Text="{Binding HelloWorld}" /&gt;
      &lt;/StackPanel&gt;
  &lt;/Grid&gt;
  </code></pre>