<mx:Panel 
          title="{message}" horizontalAlign="center"
          paddingTop="10" paddingBottom="10" paddingLeft="10" paddingRight="10" 
      >
          <mx:Label id="myLabel" width="180" fontWeight="bold" fontSize="24"/>
          <mx:Button id="myButton" label="{button}" click="clickHandler(event);" />
      </mx:Panel>
  </mx:Application>