XamWebView.Xaml

<?xml version="1.0" encoding="utf-8" ?>
<ContentPage xmlns="http://xamarin.com/schemas/2014/forms"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             xmlns:d="http://xamarin.com/schemas/2014/forms/design"
             xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
             mc:Ignorable="d"
             xmlns:controls="clr-namespace:XamWebView"
             x:Class="XamWebView.MainPage">

    <controls:CustomWebView x:Name="webView" HorizontalOptions="FillAndExpand" VerticalOptions="FillAndExpand">
        
    </controls:CustomWebView>

</ContentPage>