title: Xamarin Forms - Webview is not showing up within my StackLayout
body: <p>why isn't the <code>WebView</code> showing ? I have tried <code>FillAndExpand</code> and <code>CenterAndExpand</code> , but it still not working!</p>
  
  <pre><code>&lt;?xml version="1.0" encoding="utf-8" ?&gt;
  &lt;ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
               xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
               xmlns:views="clr-namespace:MyApp.Views;assembly=MyApp"
               x:Class="MyApp.Pages.Main"&gt;
    &lt;StackLayout&gt;
      &lt;StackLayout Orientation="Horizontal" VerticalOptions="Start"&gt;
        &lt;!-- top controls --&gt;
      &lt;/StackLayout&gt;
  
      &lt;StackLayout x:Name="WebViewLayout" VerticalOptions="CenterAndExpand"&gt;
        &lt;WebView Source="https://www.google.com/" VerticalOptions="CenterAndExpand" HorizontalOptions="FillAndExpand"/&gt;
      &lt;/StackLayout&gt;
  
      &lt;StackLayout Orientation="Horizontal" VerticalOptions="End"&gt;
        &lt;views:AdMobView WidthRequest="400" HeightRequest="50" /&gt;
      &lt;/StackLayout&gt;
    &lt;/StackLayout&gt;
  
  
  &lt;/ContentPage&gt;
  </code></pre>