<Button
       android:id="@+id/button_intro"
       android:layout_width="70dp"
       android:layout_height="70dp"
       android:layout_marginBottom="8dp"
       android:layout_marginEnd="8dp"
       android:layout_marginStart="8dp"
       android:layout_marginTop="8dp"
       android:background="@drawable/round_button"
       android:foreground="@drawable/ic_into"
       app:layout_constraintBottom_toTopOf="@+id/button_condition"
       app:layout_constraintEnd_toEndOf="parent"
       app:layout_constraintHorizontal_bias="0.498"
       app:layout_constraintStart_toStartOf="parent"
       app:layout_constraintTop_toTopOf="parent"
       app:layout_constraintVertical_bias="0.634" />

<solid
    android:color="@color/colorPrimary">
</solid>
<size
    android:width="120dp"
    android:height="120dp">
</size>