<resources xmlns:android="http://schemas.android.com/apk/res/android">

    <style name="AppTheme" parent="android:Theme.Light.NoTitleBar.Fullscreen">
        <item name="android:textSize">20sp</item>
    </style>
    <style name="DialogTheme" parent="android:Theme.Dialog">
        <item name="android:textSize">20sp</item>
    </style>
    
</resources>