P15_d.xml

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="60dp"
    android:layout_marginTop="4dp"
    android:layout_marginBottom="4dp"
    android:layout_marginStart="16dp"
    android:layout_marginEnd="16dp"
    android:background="@color/accent"
    android:elevation="10dp"
    android:id="@+id/card">

        <TextView
            android:id="@+id/mainText"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_alignParentBottom="true"
            android:layout_alignParentTop="true"
            android:gravity="center"
            android:textColor="@color/white"
            android:textSize="18sp"
            android:textStyle="bold" />

</RelativeLayout>