<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
                android:id="@+id/main"
                android:layout_width="match_parent"
                android:layout_height="match_parent"
                android:orientation="vertical">

    <org.mozilla.geckoview.GeckoView
        android:id="@+id/gecko_view"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:layout_above="@id/toolbar"
        android:scrollbars="none"
        />

    <android.support.v7.widget.Toolbar
            android:id="@+id/toolbar"
            android:layout_width="match_parent"
            android:layout_height="?android:actionBarSize"
            android:layout_alignParentBottom="true"/>

    <ProgressBar
            android:id="@+id/page_progress"
            style="@style/Base.Widget.AppCompat.ProgressBar.Horizontal"
            android:layout_width="match_parent"
            android:layout_height="3dp"
            android:layout_alignTop="@id/gecko_view" />
</RelativeLayout>