Small layout improvement

app/src/main/res/layout/dialog_theme.xml

@@ -1,10 +1,14 @@
 <?xml version="1.0" encoding="utf-8"?>
-<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
+<ScrollView xmlns:android="http://schemas.android.com/apk/res/android"
     xmlns:app="http://schemas.android.com/apk/res-auto"
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
     android:padding="24dp">
 
+    <androidx.constraintlayout.widget.ConstraintLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content">
+
         <TextView
             android:id="@+id/tvCaption"
             android:layout_width="wrap_content"
@@ -14,27 +18,16 @@
             app:layout_constraintStart_toStartOf="parent"
             app:layout_constraintTop_toTopOf="parent" />
 
-    <ScrollView
-        android:id="@+id/scroll"
-        android:layout_width="match_parent"
-        android:layout_height="wrap_content"
-        android:layout_marginTop="24dp"
-        app:layout_constraintEnd_toEndOf="parent"
-        app:layout_constraintStart_toStartOf="parent"
-        app:layout_constraintTop_toBottomOf="@id/tvCaption">
-
-        <androidx.constraintlayout.widget.ConstraintLayout
-            android:layout_width="match_parent"
-            android:layout_height="wrap_content">
 
         <RadioGroup
             android:id="@+id/rgTheme"
             android:layout_width="0dp"
             android:layout_height="wrap_content"
+            android:layout_marginTop="24dp"
             android:orientation="vertical"
             app:layout_constraintEnd_toEndOf="parent"
             app:layout_constraintStart_toStartOf="parent"
-                app:layout_constraintTop_toTopOf="parent">
+            app:layout_constraintTop_toBottomOf="@id/tvCaption">
 
             <RadioButton
                 android:id="@+id/rbThemeLight"
@@ -105,4 +98,3 @@
             app:layout_constraintTop_toBottomOf="@id/rgTheme" />
     </androidx.constraintlayout.widget.ConstraintLayout>
 </ScrollView>
-</androidx.constraintlayout.widget.ConstraintLayout>