PageB.xaml

<Page
    x:Class="kent_glo_20180830.UI.PageB"
    xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
    xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml"
    xmlns:local="using:kent_glo_20180830.UI"
    xmlns:d="http://schemas.microsoft.com/expression/blend/2008"
    xmlns:mc="http://schemas.openxmlformats.org/markup-compatibility/2006"
    mc:Ignorable="d">

    <Grid Background="Transparent"   
          Width="{StaticResource app_width}"
          Height="{StaticResource app_height}">

        <Grid Name="continueToVideo"
              Tapped="continueToVideo_Tapped"
              Background="#01007700"
              Visibility="Collapsed"
              HorizontalAlignment="Right"
              VerticalAlignment="Bottom"
              Margin="0,0,110,260"
              Width="200"
              Height="100"/>
        
        <Grid Name="back"
              Tapped="back_Tapped"
              Background="#01007700"
              Visibility="Collapsed"
              HorizontalAlignment="Left"
              VerticalAlignment="Bottom"
              Margin="80,0,0,260"
              Width="200"
              Height="100"/>



    </Grid>
</Page>