Create Simple Page for Google Calendar Quick Add Submission

Hello! I would like a very simple webpage written in Javascript. When the page loads, the user authenticates with your Google account. Once authenticated, the user sees one input box (with voice support; see screenshot) and a submit button. Whatever the user submits in this box gets sent as a Google Calendar Quick Add submission, and the user is shown a success/error message. This all (including the voice input) should work on Android/iOS. The forms, buttons, and boxes should all be Bootstrap. Message me with any questions.