HarmonyOS RichEditor 内容不居中显示

RichEditor({ controller: this.controllerRich}) 
  .width('100%') 
  .height(40) 
  .layoutWeight(1) 
  .borderRadius(10) 
  .backgroundColor(Color.Red) 
  .margin({ top: 20 ,left:14,bottom:5}) 
  .key('RichEditor') 
  .id('id') 
  .placeholder('平台提倡文明用语，请温柔发言哦~',{font:{size:12},fontColor:'#999999'}) 
  .defaultFocus(true) 
  .onReady(() => { 
    this.controllerRich.addTextSpan("0123456789\n", { 
      style: { 
        fontColor: Color.Pink, 
        fontSize: "32", 
      }, 
      paragraphStyle: { 
        textAlign: TextAlign.Center, 
        leadingMargin: 16 
      } 
    }) 
  })