prs/prs.mobile.new/PRS.Mobile/CustomControls/Expander/ExpanderView.xaml

<?xml version="1.0" encoding="utf-8"?>

<ContentView xmlns="http://xamarin.com/schemas/2014/forms"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             x:Class="PRS.Mobile.ExpanderView">
    <ContentView.Content>
        <ScrollView 
            x:Name="Scroll"
            BackgroundColor="Transparent" 
            VerticalOptions="Start" 
            Orientation="Horizontal"
            HorizontalOptions="Fill">
            <StackLayout 
                x:Name="Stack" 
                BackgroundColor="Transparent" 
                Orientation="Horizontal">
                </StackLayout>

        </ScrollView>
    </ContentView.Content>
</ContentView>