fix: default font size

Closes: #45

Author: marcocesarato

src/InputSpinner.js

@@ -1465,15 +1465,9 @@ InputSpinner.defaultProps = {
 	arrows: false,
 	showBorder: false,
 	fontSize: 14,
-	fontFamily: Platform.select({
-		ios: "San Francisco",
-		default: "sans-serif",
-	}),
+	fontFamily: defaultFont,
 	buttonFontSize: 25,
-	buttonFontFamily: Platform.select({
-		ios: "San Francisco",
-		default: "sans-serif",
-	}),
+	buttonFontFamily: defaultFont,
 	buttonTextColor: null,
 	buttonPressTextColor: null,
 	maxLength: null,

src/Style.js

@@ -5,6 +5,11 @@ import {Platform, StyleSheet} from "react-native";
  */
 export const defaultColor = "#3E525F";
 export const defaultTransparent = "#FFFFFF00";
+export const defaultFont = Platform.select({
+	ios: "System",
+	android: "System",
+	web: "sans-serif",
+});
 
 /**
  * Default style