anchor.diff:    double _contentHeight = cardContentMinHeight;
     bool active;
     Function hide;
  +  String webCardUrl;
   
     @override
     void initState() {
  
positive.code:   @override
    Widget build(BuildContext context) {
      active = Provider.of<CardsDataProvider>(context).cardStates[widget.cardId];
      checkWebURL();
  
      if (active != null && active) {
        return Card(
  
negative.code:   // builds the actual webview widget
    Widget buildBody(context) {
        return Container(
          height: 200, //_contentHeight,
          child: WebView(
            opaque: false,
            javascriptMode: JavascriptMode.unrestricted,
            initialUrl: webCardUrl,
            onWebViewCreated: (controller) {
              _webViewController = controller;
            },
  