It's time to get classy

Let's start by taking a look at our app's main app.css file inside the App directory:

/*
In NativeScript, the app.css file is where you place CSS rules that
you would like to apply to your 

entire application. Check out
http://docs.nativescript.org/ui/styling for a full list of the CSS
selectors and 

properties you can use to style UI components.

/*
For example, the following CSS rule changes the font size 

of all UI
components that have the btn class name.
*/
.btn {
  font-size: 18;
}

/*
In many cases you may want to use the NativeScript core theme instead
of writing your own CSS rules. For a full list 

of class names in the theme
refer to http://docs.nativescript.org/ui/theme.
*/
@import 'nativescript-

theme-core/css/core.light.css';

Out of the box, the --ng template hints at two options you could choose from to build...