title: How to have negative space between widgets in a column?
body: <p>Sometimes I want to arrange items in a column with different amounts of space between each item. A typical implementation uses SizedBox or Container.padding, but neither permits negative values. Are there any ways to achieve negative spacing as of Flutter 1.0?</p>
  
  <pre><code>return Column(
    children: &lt;Widget&gt;[
      Container(height:20, width: 20, color: Color(0x800000FF),),
      SizedBox(height: -10,), // Illegal, can't be negative
      Container(height:20, width: 20, color: Color(0x80FF0000),),
      Container(
        padding: EdgeInsets.fromLTRB(0, -10, 0, 0), // Illegal, can't be negative
        child: Container(height:20, width: 20, color: Color(0x8000FF00),),
      )
    ],
  );
  </code></pre>