如何取消点击输入框时的背景高亮效果

@Entry 
@Component 
struct Page46 { 
  @Styles 
  onPress() { 
    .backgroundColor('#00000000') 
  } 
 
  build() { 
    Row() { 
      Column() { 
        TextInput({ placeholder: '请输入手机号' }) 
          .type(InputType.PhoneNumber) 
          .backgroundColor('#00000000') 
          .margin({ left: 10 }) 
          .maxLength(13) 
          .placeholderColor('#879499') 
          .height(50) 
          .copyOption(CopyOptions.None) 
          .fontColor('#666666') 
          .fontSize('18vp') 
          .flexGrow(1) 
          .stateStyles({ pressed: this.onPress }) 
      } 
      .width('100%') 
    } 
    .height('100%') 
  } 
}