HarmonyOS Grid高度无法等分(横3竖2)

@Entry  
@Component  
struct GridDemo {  
  @State message: string = 'Hello World';  
  @State arr:Array<string> = ['arr1','arr2','arr3','arr4','arr5','arr6']  
  build() {  
    Row() {  
      Column() {  
        Grid() {  
          ForEach(this.arr, (item:string, index:number) => {  
            GridItem() {  
              Text(item)  
                .backgroundColor(Color.Blue)  
            }.backgroundColor(Color.Pink)  
            .height(100)  
          })  
        }  
        .rowsTemplate('1fr 1fr 1fr')  
        .columnsTemplate('1fr 1fr')  
      }.height(200)  
    }  
    .height('100%')  
  }  
}