<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="activity_horizontal_margin_small">4dp</dimen>

    <dimen name="margin_very_small">2dp</dimen>

    <dimen name="fab_margin">12dp</dimen>
    <dimen name="fab_margin_big">18dp</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="activity_horizontal_margin_small">4dp</dimen>
    <dimen name="margin_very_small">2dp</dimen>
    <dimen name="fab_margin">12dp</dimen>
    <dimen name="fab_margin_big">18dp</dimen>

    <!-- Font Sizes [Custom] -->
    <dimen name="big_text">18sp</dimen>
    <dimen name="today_item_big">36sp</dimen>
    <dimen name="today_item_really_big">72sp</dimen>

</resources>

Add new Dimens for big texts
Add new Dimens for big texts
