HarmonyOS Span内边距不生效

Text() {
  Span(this.text)
    .height('100%')
    .padding({ left: 8.5, right: 8.5 })

  ImageSpan($r('app.media.search_tag_clear'))
    .width(16)
    .aspectRatio(1)
    .margin({ left: 12.5 })
    .onClick(() => {
      PageRouter.openUrl(DFZXConstantsRouter.searchPage, { 'index': this.index },
        (result: Object, prePagePath: string, prePageParam: Object) => {
          this.configData(result as Record<string, Object>)
          console.log(JSON.stringify(result))
        })
      // PageRouter.openUrl(DFZXConstantsRouter.searchPage,{'defaultSearchWordModel':this.defaultSearchWordModel},()=>{},{launchMode:LaunchMode.POP_TO_SINGLETON,animated:true})
    })
}

如上代码.padding({left:8.5,right:8.5})再Span里面并没有生效。