title: flutter.io (dart) - set padding as a percentage of device width?
body: <p>How can I set padding as a percentage of screen width in Flutter?</p>
  
  <p>The problem I'm trying to solve, I initially tried to solve with AspectRatio and FractionallySizedBox, as well as different attempts with Row and Columns, but the parent is a Positioned widget with a child image. Nothing worked.</p>