student.js

// ==UserScript==
// @name         Inflearn Student
// @namespace    https://www.inflearn.com
// @version      0.1
// @description  Study Hard
// @author       mirusu400
// @match        https://www.inflearn.com/course/*/unit/*
// @icon         https://www.google.com/s2/favicons?sz=64&domain=inflearn.com
// @grant        none
// ==/UserScript==

(function() {
    'use strict';
    async function timeSensativeAction(){
        document.getElementsByClassName("css-u3b0qh")[1].click();

        document.getElementsByClassName("css-u3b0qh")[2].click();
    }
    setInterval(timeSensativeAction,500);
})();