Use HRule for Form
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml" layout="vertical"> <mx:Panel title="User Entry."> <mx:Form> <mx:FormItem label="Name:"> <mx:TextInput id="nameInput" /> </mx:FormItem> </mx:Form> <mx:HRule width="100%" /> <mx:Label text="You Entered:" fontWeight="bold" /> <mx:HBox> <mx:Label text="First Name:" /> <mx:Text id="nameField" /> </mx:HBox> <mx:Button id="btn" label="unwatch"/> </mx:Panel> </mx:Application>