ProjetMJC/app/src/main/res/values/dimens.xml

<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">16dp</dimen>
    <dimen name="title_height">70dp</dimen>
    <dimen name="title_text_size">30dp</dimen>
    <dimen name="bomb_key_size">70</dimen>
</resources>