mobile-android/app/src/main/res/layout/fragment_intro.xml

<?xml version="1.0" encoding="utf-8"?>
<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:id="@+id/root"
    android:layout_width="match_parent"
    android:layout_height="wrap_content">

    <androidx.constraintlayout.widget.ConstraintLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:paddingStart="@dimen/keyline_5"
        android:paddingEnd="@dimen/keyline_5">

        <ImageView
            android:id="@+id/intro_picture"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:src="@drawable/ic_intro_picture"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toTopOf="parent" />

        <TextView
            android:id="@+id/intro_headline"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginTop="@dimen/keyline_6"
            android:text="@string/intro_headline"
            android:contentDescription="@string/intro_headline_content_description"
            android:textAppearance="?textAppearanceHeadline2"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@+id/intro_picture" />

        <TextView
            android:id="@+id/intro_content"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginTop="@dimen/keyline_4"
            android:text="@string/intro_content"
            android:textAppearance="?textAppearanceBody1"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:layout_constraintTop_toBottomOf="@+id/intro_headline" />

        <View
            android:layout_width="match_parent"
            android:layout_height="50dp"
            app:layout_constraintTop_toBottomOf="@+id/intro_content" />
    </androidx.constraintlayout.widget.ConstraintLayout>
</ScrollView>