JSFiddle - React, Tailwind, and code Playground

HTML

<button id="next">Наступне</button>
<button id="know">Знаю</button>
<div id="lat"></div>
<div id="ukr"></div>

CSS

body{
    font-family: Arial, sans-serif;
    font-size: 20pt;
}

JavaScript

var state=0;
var word;

$(function(){
$('#next').click(function(){
    if(state===0){
        while(true){
            word=words[Math.floor(Math.random()*words.length)];
            if(Math.floor(Math.random()*(word[2]*2+1))==0)
                break;
        }
        $('#lat').text(word[0]);
        state=1;
    } else if(state===1){
        $('#ukr').text(word[1]);
        $('#know').removeAttr('disabled');
        state=2;
    } else if(state===2){
        $('#lat').text('');
        $('#ukr').text('');
        $('#know').attr('disabled','disabled');
        state=0;
        $('#next').click();
    }
})

$('#know').click(function(){
    if(state===2){
        word[2]+=1;
        $('#lat').text('');
        $('#ukr').text('');
        $('#know').attr('disabled','disabled');
        state=0;
        $('#next').click();
    }
})
});

var words=[
["de (Abl.)","про",0],
["Italia, ae f","Італія",0],
["lingua, ae f","мова",0],
["Latīna","латинська",0],
["antīqua","стародавня",0],
["in (Abl.)","в, на",0],
["terra, ae f","земля",0],
["Eurōpa, ae f","Європа",0],
["et","і, та",0],
["patria, ae f","батьківщина",0],
["poēta, ae m","поет",0],
["Roma, ae f","Рим",0],
["multi","численні",0],
["pugna, ae f","битва",0],
["victoria, ae f","перемога",0],
["clara","славна",0],
["Sicilia, ae f","Сицилія",0],
["magna","велика",0],
["insŭla, ae f","острів",0],
["inter (Acc.)","між",0],
["ora, ae f","узбережжя",0],
["Aethna, ae f","Етна",0],
["nota","відома",0],
["audacia, ae f","відвага",0],
["nauta, ae m","моряк",0],
["doctrīna, ae f","вчення",0],
["littĕrae, ārum f","наука",0],
["Graecia, ae f","Греція",0],
["Germania, ae f","Германія",0],
["Britannia, ae f","Британія",0],
["Gallia, ae f","Галлія",0],
["Polonia, ae f","Польща",0],
["Bohemia, ae f","Богемія",0],
["Scotia, ae f","Скотія",0],
["Hungaria, ae f","Угорщина",0],
["alias","по-іншому",0],
["Pannonia, ae f","Паннонія",0],
["Hispania, ae f","Іспанія",0],
["Belgia, ae f","Бельгія",0],
["Helvetia, ae...