<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="fab_margin">12dp</dimen>
    <dimen name="big_text">18sp</dimen>

</resources>

<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="fab_margin">12dp</dimen>
    <dimen name="fab_margin_big">18dp</dimen>
    <dimen name="big_text">18sp</dimen>

</resources>

Add new margin value 'fab_margin_big'
Add new margin value 'fab_margin_big'
