如何删除选项卡按钮和边框容器之间的空间。
代码是
<s:TabBar dataProvider="{vsApplication}" >
<s:layout>
<!--<s:ButtonBarHorizontalLayout gap="7" />-->
<s:HorizontalLayout gap="7" paddingBottom="0"/>
</s:layout>
</s:TabBar>
<mx:ViewStack id="vsApplication" width="100%">
<s:NavigatorContent id="ncConfiguration" label="Configuration" width="100%">
<s:BorderContainer width="100%">
</s:BorderContainer>
</s:NavigatorContent>
<s:NavigatorContent id="ncProject" label="Project" width="100%">
<s:BorderContainer width="100%">
<mx:DataGrid id="dgProject" dataProvider="{projectData}" doubleClickEnabled="true" itemDoubleClick="dgProject_itemDoubleClickHandler(event)">
<mx:columns>
<mx:DataGridColumn headerText="Project ID" dataField="ProjectID"/>
<mx:DataGridColumn headerText="Project Name" dataField="ProjectName"/>
<mx:DataGridColumn headerText="Planned Start Date" dataField="PlannedStartDate"/>
<mx:DataGridColumn headerText="Planned End Date" dataField="PlannedEndDate"/>
<mx:DataGridColumn headerText="Actual Start Date" dataField="ActualStartDate"/>
<mx:DataGridColumn headerText="Actual End Date" dataField="ActualEndDate"/>
</mx:columns>
</mx:DataGrid>
</s:BorderContainer>
</s:NavigatorContent>
<s:NavigatorContent id="ncTimesheet" label="Timesheet" width="100%">
<s:BorderContainer width="100%">
</s:BorderContainer>
</s:NavigatorContent >
<s:NavigatorContent id="ncDashboard" label="Dashboard" width="100%">
<s:BorderContainer width="100%">
</s:BorderContainer>
</s:NavigatorContent>
</mx:ViewStack>