Tabs组件的tabBar，能否设置对齐方法？

// 使用自定义页签组件  
Scroll() {  
  Row() {  
    ForEach(this.tabArray, (item: number, index: number) => {  
      Row({ space: 20 }) {  
        Text('页签' + item)  
          .fontWeight(index === this.focusIndex? FontWeight.Bold:FontWeight.Normal)  
      }  
      .padding({left:'10fp',right:'10fp'})  
      .onClick(() => {  
        this.controller.changeIndex(index)  
        this.focusIndex = index  
      })  
    })  
  }  
}  
.align(Alignment.Start)  
.scrollable(ScrollDirection.Horizontal)  
.scrollBar(BarState.Off)  
.width('100%')  
//tabs组件把tabbar隐藏  
Tabs({ barPosition: BarPosition.Start, controller: this.controller }) {  
  ForEach(this.tabArray, (item: number, index: number) => {  
    TabContent() {  
      Text('我是页面 ' + item + " 的内容")  
        .fontSize(30)  
    }  
  })  
}.barHeight(0)