JSFiddle - React, Tailwind, and code Playground

JavaScript

// ==UserScript==
// @name         Bye mister countdown
// @namespace    http://tampermonkey.net/
// @version      0.1
// @description  disable the countdown
// @author       You
// @match        https://www.memrise.com/course/*/garden/*
// @match        https://www.memrise.com/garden/review/*
// @grant        none
// ==/UserScript==

(function() {
document.getElementById("central-area").addEventListener("DOMSubtreeModified", function(){
MEMRISE.garden.timer.active = false
})
})();