async void RightBlue_Tapped(object sender, System.EventArgs e)
 {
     await PageLeft.TranslateTo(0, 0, 500, Easing.SinIn);
 }
 async void LeftWhite_Tapped(object sender, System.EventArgs e)
 {
     await PageLeft.TranslateTo(-Page.Width, 0, 500, Easing.SinIn);
 }