title: Xamarin Forms Styles - Support multiple target types
body: <p>I have recently updated to very latest Xamarin forms pre release 4.2 version. One notable breaking change I have encounter is - Say I have the following Style:</p>
  
  <pre class="lang-xml prettyprint-override"><code>    &lt;Style x:Key="LightTextLabelStyle" TargetType="Label"&gt;
          &lt;Setter Property="FontFamily" Value="{StaticResource TextLight}" /&gt;
          &lt;Setter Property="FontSize" Value="15" /&gt;
          &lt;Setter Property="TextColor" Value="{StaticResource greyishBrown}" /&gt;               
      &lt;/Style&gt;
  </code></pre>
  
  <p>In previous versions, same target "Label" was supported for both Span and Labels. Like - this was working before:</p>
  
  <pre class="lang-xml prettyprint-override"><code>    &lt;Label Margin="0,6,0,0"&gt;
           &lt;Label.FormattedText&gt;
                &lt;FormattedString&gt;
                      &lt;Span Text="{Binding PriceText}" Style="{StaticResource LightTextLabelStyle}" FontSize="13" /&gt;
                       &lt;Span Text="{Binding BidAmount, StringFormat=' {0:C0}' TargetNullValue=' Pending'}" Style="{StaticResource LightTextLabelStyle}" FontSize="13" /&gt;
                &lt;/FormattedString&gt;
            &lt;/Label.FormattedText&gt;
      &lt;/Label&gt;
  </code></pre>
  
  <p>Same style targeted for Label was support on Span as well. However now in new version it doesn't. </p>
  
  <p>My Question is: 
  Can we support Both Label and Span with same style? Can we not target same style for both? Like I tried the following but it doesn't compile:</p>
  
  <pre class="lang-xml prettyprint-override"><code>    &lt;Style x:Key="LightTextLabelStyle" TargetType="Label, Span"&gt;
          &lt;Setter Property="FontFamily" Value="{StaticResource TextLight}" /&gt;
          &lt;Setter Property="FontSize" Value="15" /&gt;
          &lt;Setter Property="TextColor" Value="{StaticResource greyishBrown}" /&gt;               
      &lt;/Style&gt;
  </code></pre>
  
  <p>Please help me. I can copy paste the style and make 2 different styles however; if there's a some better way?</p>