HarmonyOS web显示不全

@State NestedScrollModeF: NestedScrollMode = NestedScrollMode.PARENT_FIRST 
@State NestedScrollModeB: NestedScrollMode = NestedScrollMode.SELF_FIRST 
build() { 
  Scroll() { 
    Column() { 
      Text("标题标题标题标题标题标题标题标题标题标题").height(200) 
      Web({ src: "", controller: this.controller }) 
        .javaScriptAccess(true) 
        .horizontalScrollBarAccess(false) 
        .verticalScrollBarAccess(false) 
        .margin({ top: 12, left: 12, right: 12 }) 
          // .height(this.webHeight) 
        .nestedScroll({ scrollForward: this.NestedScrollModeB, scrollBackward: this.NestedScrollModeF }) 
        .width('100%').height('100%')