In this section, we will take a look at how to update the user interface for our WalkTrailInfoPage, to apply Explicit Styles to our XAML elements so that our control elements will take on each of the platform-specific styles that our app is running on.
Whenever you use Explicit Styles, these must be declared in your XAML pages using a ResourceDictionary, and unlike Global Styles, they must be added to the XAML page using one or more Style declarations.
A Style is made Explicit by giving its declaration an x:Key attribute, which provides it with a descriptive key in the ResourceDictionary. These will then need to be applied to specific visual elements by setting their Style
