HarmonyOS 关于CustomDialog自定义弹窗的样式问题

@Entry
@Component
struct bindsheet {
  @State isShow:boolean = false;
  @Builder
  myBuilder() {
    Column() {
      Text('Hello Word')
        .fontSize(50)
        .fontWeight(FontWeight.Bold)
        .margin(10)
    }
  }
  build() {
    Row() {
      Column() {
        Button("打开bindsheet弹窗")
          .onClick(() => {
            this.isShow = true
          })
          .fontSize(20)
          .margin(10)
      }
      .width("100%")
      .height("100%")
      .bindSheet($$this.isShow, this.myBuilder(), {
        detents: [SheetSize.MEDIUM, SheetSize.LARGE, 200],
        backgroundColor: Color.White,
        blurStyle: BlurStyle.Thick,
        showClose: false,
        dragBar:true,//默认显示控制条
      })
    }.width("100%")
    .backgroundColor("#ff578ddd")
  }
}