BluePage.xaml

<?xml version="1.0" encoding="utf-8" ?>
<ContentPage xmlns="http://schemas.microsoft.com/dotnet/2021/maui"
             xmlns:x="http://schemas.microsoft.com/winfx/2009/xaml"
             x:Class="NavPageDemo.BluePage"
             Title="BluePage" BackgroundColor="LightBlue">
    <ScrollView>
        <Grid RowDefinitions="Auto, *, 60" ColumnDefinitions="*" Margin="20, 30, 20, 10">
            <Label Grid.Row="0"
               Text="Welcome to the Blue page!" TextColor="DarkBlue"
               FontSize="Large" FontFamily="OpenSans_Semibold"
               VerticalOptions="Center"
               HorizontalOptions="Center"/>

            <HorizontalStackLayout Grid.Row="2" Spacing="20"
                           HorizontalOptions="Center" VerticalOptions="Center">
                <Button BackgroundColor="White" Clicked="GoMain"
                WidthRequest="50" HeightRequest="50" BorderColor="Black"/>

                <Button BackgroundColor="PaleVioletRed" Clicked="GoRed"
WidthRequest="50" HeightRequest="50" BorderColor="Black"/>

                <Button BackgroundColor="LightGreen" Clicked="GoGreen"
WidthRequest="50" HeightRequest="50" BorderColor="Black"/>
            </HorizontalStackLayout>
        </Grid>
    </ScrollView>
</ContentPage>