simulate_spinner.xml

<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:orientation="vertical">
    
  <TextView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:hint="@string/title.department"
        android:paddingLeft="5dp"
        android:textSize="12sp" />

    <Spinner
        android:id="@+id/department"
        style="@style/Widget.AppCompat.Spinner.Underlined"
        android:layout_width="match_parent"
        android:layout_height="50dp" />
</LinearLayout>