activity_subtraction_adv_correct.xml

<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:tools="http://schemas.android.com/tools"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:background="@drawable/background_adv_choice"
    tools:context=".MainActivity">

    <androidx.appcompat.widget.AppCompatButton
        android:id="@+id/buttonSubtractionAdvBack"
        android:layout_width="262dp"
        android:layout_height="74dp"
        android:layout_marginTop="300dp"
        android:background="@drawable/button_shape"
        android:backgroundTint="#0c5dad"
        android:elevation="15dp"
        android:fontFamily="casual"
        android:text="Back to menu"
        android:textAllCaps="false"
        android:textColor="#FFEEBA"
        android:textSize="24sp"
        android:textStyle="bold"
        app:iconTint="#FFFFFF"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:rippleColor="#A8433103" />

    <androidx.appcompat.widget.AppCompatButton
        android:id="@+id/buttonSubtractionAdvAgain"
        android:layout_width="262dp"
        android:layout_height="74dp"
        android:layout_marginTop="450dp"
        android:background="@drawable/button_shape"
        android:backgroundTint="#ffff5c"
        android:elevation="15dp"
        android:fontFamily="casual"
        android:text="Play again"
        android:textAllCaps="false"
        android:textColor="#010101"
        android:textSize="24sp"
        android:textStyle="bold"
        app:iconTint="#FFFFFF"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintHorizontal_bias="0.496"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent"
        app:rippleColor="#A8433103" />

    <TextView
        android:id="@+id/SubAdvGz"
        android:layout_width="327dp"
        android:layout_height="95dp"
        android:layout_marginTop="100dp"
        android:fontFamily="casual"
        android:text="Way to go!"
        android:textAlignment="center"
        android:textColor="#C1F4033B"
        android:textSize="60sp"
        android:textStyle="bold"
        app:layout_constraintEnd_toEndOf="parent"
        app:layout_constraintStart_toStartOf="parent"
        app:layout_constraintTop_toTopOf="parent" />

</androidx.constraintlayout.widget.ConstraintLayout>