<?xml version="1.0" encoding="utf-8"?>
<mx:Application layout="absolute"
     xmlns:mx="http://www.adobe.com/2006/mxml"
     paddingTop="0" paddingBottom="0" 
     paddingLeft="0" paddingRight="0" 
     width="100%" height="100%"
     backgroundGradientColors="[#FFFFFF,#FFFFFF]"
     viewSourceURL="srcview/index.html">

    <mx:Label text="Application padding is zero"
         top="0" horizontalCenter="0"/>
    
    <mx:Panel width="200" height="200"
         top="0" left="0"
         borderAlpha="1.0"/>
    
    <mx:Panel width="200" height="200"
         top="0" right="0"
         borderAlpha="1.0"/>
    
    <mx:Panel width="200" height="200"
         bottom="0" left="0"
         borderAlpha="1.0"/>
    
    <mx:Panel width="200" height="200"
         bottom="0" right="0"
         borderAlpha="1.0"/>
    
</mx:Application>