title: How to align a Column's child to the bottom
body: <p>I'm trying to build a generic home page and I want to align the last child of my column (which contains all the widgets for the page) to the bottom of the screen but the widget wrapped in the Align is not moving. The following is what makes the most sense to me:</p>
  
  <pre><code>Column(
    mainAxisSize: MainAxisSize.max,
    children: &lt;Widget&gt;[
      ChildA(),
      ChildB(),
      Align(
        alignment: Alignment.bottomCenter,
        child: BottomAlignedChild()
      )
    ]
  )
  </code></pre>
  
  <p>What am I doing wrong?</p>