HBox with border and padding
<?xml version="1.0" encoding="utf-8"?> <mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="vertical"> <mx:HBox borderStyle="solid" borderColor="#000000" horizontalAlign="center" paddingBottom="10" paddingLeft="10" paddingRight="10" paddingTop="10"> <mx:TextInput text="TextInput 1"/> <mx:TextInput text="TextInput 2"/> <mx:TextInput text="TextInput 3"/> </mx:HBox> </mx:Application>