login.cs

var loginPage = new ContentPage {
  Title = "Profile",
  Icon = "Profile.png",
  Content = new StackLayout {
    Spacing = 20, Padding = 50, VerticalOptions = LayoutOptions.Center,
    Children = {
      new Entry { Placeholder = "Username" },
      new Entry { Placeholder = "Password", IsPassword = true },
      new Button {
        Text = "Login",
        TextColor = Color.White,
        BackgroundColor = Color.FromHex("77D065") 
      }
    }
  }
};