JSFiddle - React, Tailwind, and code Playground

HTML

<div class="outer">
	<div class="container with-curtain">
		<svg class="playa thePlay" width="100%" height="100%" viewBox="0 0 64 64">
			<path d="M25.6,46.4L44.8,32L25.6,17.6V46.4z M32,0C14.3,0,0,14.3,0,32s14.3,32,32,32s32-14.3,32-32S49.7,0,32,0z
      M32,57.6C17.9,57.6,6.4,46.1,6.4,32S17.9,6.4,32,6.4S57.6,17.9,57.6,32S46.1,57.6,32,57.6z" />
		</svg>
		<div class="inner-container curtain curtain1">
			<div class="ratio-keeper">
				<div class="wrapa">
					<div class="video video-frame" data-id="qe5WF4qCSkQ"></div>
				</div>
				<div class="panel-left"></div>
				<div class="panel-right"></div>
			</div>
		</div>
	</div>
	<!-- end container -->
	<div class="container with-curtain">
		<svg class="playb thePlay " width="100%" height="100%" viewBox="0 0 64 64">
			<path d="M25.6,46.4L44.8,32L25.6,17.6V46.4z M32,0C14.3,0,0,14.3,0,32s14.3,32,32,32s32-14.3,32-32S49.7,0,32,0z
      M32,57.6C17.9,57.6,6.4,46.1,6.4,32S17.9,6.4,32,6.4S57.6,17.9,57.6,32S46.1,57.6,32,57.6z" />
		</svg>
		<div class="inner-container curtain curtain2">
			<div class="ratio-keeper">
				<div class="wrapa">
					<div class="video video-frame" data-id="2VwsvrPFr9w"></div>
				</div>
				<div class="panel-left"></div>
				<div class="panel-right"></div>
			</div>
		</div>
	</div>
</div>

CSS

html,
body {
  height: 100%;
  margin: 0;
  padding: 0;
}

body {
  background: #353198;

}

.outer {
  display: flex;
  min-height: 100%;
  box-sizing: border-box;
  justify-content: center;
}
.container {
  display: flex;
  justify-content: center;
}
.container.active {
  flex: 1 0 0;
 
  background-size: 165px 165px;
  background-image: linear-gradient(teal 5px, #0000 5px),
    linear-gradient(90deg, teal 5px, #0000 5px),
    linear-gradient(black 10px, #0000 10px 160px, black 160px),
    linear-gradient(90deg, black 10px, #0000 10px 160px, black 160px),
    linear-gradient(orange 15px, #0000 15px 155px, orange 155px),
    linear-gradient(90deg, orange 15px, #0000 15px 155px, orange 155px),
    linear-gradient(black 20px, #0000 20px 150px, black 150px),
    linear-gradient(90deg, black 20px, #0000 20px 150px, black 150px),
    linear-gradient(teal 25px, #0000 25px 145px, teal 145px),
    linear-gradient(90deg, teal 25px, #0000 25px 145px, teal 145px),
    linear-gradient(black 30px, #0000 30px 140px, black 140px),
    linear-gradient(90deg, black 30px, #0000 30px 140px, black 140px),
    linear-gradient(orange 35px, #0000 35px 135px, orange 135px),
    linear-gradient(90deg, orange 35px, #0000 35px 135px, orange 135px),
    linear-gradient(black 40px, #0000 40px 130px, black 130px),
    linear-gradient(90deg, black 40px, #0000 40px 130px, black 130px),
    linear-gradient(teal 45px, #0000 45px 125px, teal 125px),
    linear-gradient(90deg, teal 45px, #0000 45px 125px, teal 125px),
    linear-gradient(black 50px, #0000 50px 120px, black 120px),
    linear-gradient(90deg, black 50px, #0000 50px 120px, black 120px),
    linear-gradient(orange 55px, #0000 55px 115px, orange 115px),
    linear-gradient(90deg, orange 55px, #0000 55px 115px, orange 115px),
    linear-gradient(black 60px, #0000 60px 110px, black 110px),
    linear-gradient(90deg, black 60px, #0000 60px 110px, black 110px),
    linear-gradient(teal 65px, #0000 65px 105px, teal 105px),
   ...

JavaScript

const manageCover = (function makeManageCover() {
  const config = {};

  function show(el) {
    el.classList.remove("hide");
  }

  function hide(el) {
    el.classList.add("hide");
  }

  function hideAll(elements) {
    elements.forEach(hide);
  }

  function showCovers(playButton) {
    const cover = playButton.parentElement;
    cover.classList.add("active");
    show(cover);
  }

  function coverClickHandler(evt) {
    hideAll(config.containers);
    const cover = evt.currentTarget;
    showCovers(cover);
  }

  function addClickToButtons(playButtons) {
    playButtons.forEach(function addEventHandler(playButton) {
      playButton.addEventListener("click", coverClickHandler);
    });
  }

  function addCoverHandler(coverSelector, handler) {
    const cover = document.querySelector(coverSelector);
    cover.addEventListener("click", handler);
  }

  function init(selectors) {
    config.containers = document.querySelectorAll(selectors.container);
    const playButtons = document.querySelectorAll(selectors.playButton);
    addClickToButtons(playButtons);
  }

  return {
    addCoverHandler,
    init,
    show
  };
}());

const videoPlayer = (function makeVideoPlayer() {
  const players = [];
  let player = null;


  const tag = document.createElement("script");
  tag.src = "https://www.youtube.com/player_api";
  const firstScriptTag = document.getElementsByTagName("script")[0];
  firstScriptTag.parentNode.insertBefore(tag, firstScriptTag);


  function onPlayerReady(event) {
    player = event.target;
    player.setVolume(100);
    player.playVideo();
  }

  function addPlayer(video, settings) {
    const defaults = {
      playerOptions: {
        events: {
          "onReady": onPlayerReady
        },
        host: "https://www.youtube-nocookie.com",
        videoId: video.dataset.id
      }
    };
    const playerOptions = Object.assign(defaults.playerOptions, settings);
    players.push(new YT.Player(video, playerOptions));
  }

  return {
   ...