simple responsive javascript page using google calendar API to show all appointments for a single calendar
change YOUR__GOOGLE_API_KEY with your google api developer key if you don't have any, create from here: https://docs.simplecalendar.io/google-api-key/
change YOUR_CALENDAR_ID with your calendar id find google calendar id from here: https://docs.simplecalendar.io/find-google-calendar-id/