#Universal Styles
UniversalStyleSheet contains styles common to web and mobile. Extend trait SriStyleSheet to define style sheets. SriStyleSheet comes with two methods: style (which takes attr value pairs) and styleE (which is used to extend already defined styles).
Example :
object styles extends UniversalStyleSheet {
val centering = style(
alignItems.center,
justifyContent.center
)
val gray = style(backgroundColor := "#cccccc")
val horizontal = style(flexDirection.row, justifyContent.center)
val default = styleE(centering, gray)(height := 40)
}