title: Reproduce CSS property in StackPanels : Space Between
body: <p>Is it possible in XAML to automatically separate elements in a <code>StackPanel</code> no matter what the size of the window is?</p>
  <p>In CSS with the property : space between you can send elements to both sides of the parent. This is what I want to reproduce. Is it possible ?</p>
  <p><a href="https://i.stack.imgur.com/WsNs8.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/WsNs8.png" alt="Two black squares on a grey background alinged left and right with a space in between." /></a></p>