title: where to set xamarin forms master pages styles
body: <p>I am a newbie following a book on <code>Xamarin</code> forms (xaml) and one example has a <code>ContentPage</code> with <code>ListView</code>:</p>
  
  <pre><code>   &lt;ListView ItemsSource="{Binding ListItems}" RowHeight="100" BackgroundColor="Black" HasUnevenRows="true" &gt;
        &lt;ListView.ItemTemplate&gt;
           &lt;DataTemplate&gt;
              &lt;ViewCell&gt;
                 &lt;StackLayout HorizontalOptions="StartAndExpand" Orientation="Horizontal" Padding="5,10,5,15"&gt;
                    &lt;StackLayout HorizontalOptions="Start" Orientation="Vertical"&gt;
                       &lt;Label HorizontalOptions="Start" FontSize="20" FontAttributes="Bold" TextColor="White" Text="{Binding Title}"/&gt;
                       &lt;Label HorizontalOptions="Start" FontSize="12" FontAttributes="Bold" TextColor="White" Text="{Binding Description}"/&gt;
                    &lt;/StackLayout&gt;
                    &lt;StackLayout HorizontalOptions="EndAndExpand" Orientation="Horizontal" WidthRequest="260"&gt;
                       &lt;Label HorizontalOptions="Center" FontSize="25" TextColor="Aqua" Text="{Binding Price}"/&gt;
                       &lt;Button Text="Buy Now" BackgroundColor="Teal" HorizontalOptions="EndAndExpand" Command="{Binding BuyCommand}" /&gt;
                    &lt;/StackLayout&gt;
                 &lt;/StackLayout&gt;
              &lt;/ViewCell&gt;
           &lt;/DataTemplate&gt;
        &lt;/ListView.ItemTemplate&gt;
     &lt;/ListView&gt;
  </code></pre>
  
  <p>I've created a project and copied the book's sample code to my project, so apart from namespaces the code is identical between the 2 projects. Both run but produce different visual results:</p>
  
  <pre><code>MainPage = new NavigationPage(new ListViewButton());
  </code></pre>
  
  <p>The source code displays the data in 3 column, perfectly aligned. My copied code presents the same data in 3 columns but they are not aligned vertically. Plus the <code>NavigationPage</code> has no header and has a white background. The source code has header information and a black background. I cannot find where these styles are set or any difference in the code between the 2 projects.</p>