<resources>
    <!-- Default screen margins, per the Android Design guidelines. -->
    <dimen name="activity_horizontal_margin">16dp</dimen>
    <dimen name="activity_vertical_margin">16dp</dimen>

    <dimen name="diameter">48dp</dimen>
    <dimen name="elevation_low">1dp</dimen>
    <dimen name="elevation_high">4dp</dimen>
    <dimen name="add_button_margin">16dp</dimen>
</resources>
