JSFiddle - React, Tailwind, and code Playground

HTML

<div id="player"></div>
<button class="start-video">Start Video</button>

CSS

button {
    position: absolute;
    top: 106px;
    padding: 12px;
    left: 174px;
}

JavaScript

//youtube script
var tag = document.createElement('script');
tag.src = "//www.youtube.com/iframe_api";
var firstScriptTag = document.getElementsByTagName('script')[0];
firstScriptTag.parentNode.insertBefore(tag, firstScriptTag);

var player;

onYouTubeIframeAPIReady = function () {
    player = new YT.Player('player', {
        height: '244',
        width: '434',
        videoId: 'AkyQgpqRyBY',  // youtube video id
        playerVars: {
            'autoplay': 0,
            'rel': 0,
            'showinfo': 0
        },
        events: {
            'onStateChange': onPlayerStateChange
        }
    });
}

onPlayerStateChange = function (event) {
    if (event.data == YT.PlayerState.ENDED) {
        $('.start-video').fadeIn('normal');
    }
}

$(document).on('click', '.start-video', function () {
    $(this).fadeOut('normal');
    player.playVideo();
});