JSFiddle - React, Tailwind, and code Playground

HTML

<div class="buttons">
    <div class="show-button">Show</div>
    <div id="infoToggler">
        <div class="play-button">Play</div>
        <div class="pause-button">Pause</div>
    </div>
    <div class="exit-button">Exit</div>
</div>

<div class="video-large">
    <video id="video-2">
        <source src="https://www.bigcartel.com/videos/bgvid-1280x720-rf25-d0e7eb9e.mp4v" type="video/mp4" />
    </video>
</div>

CSS

body {
    margin: 0;
    background: #000;
}
video {
    position: fixed;
    top: 50%;
    left: 50%;
    min-width: 100%;
    min-height: 100%;
    width: auto;
    height: auto;
    z-index: -100;
    -webkit-transform: translateX(-50%) translateY(-50%);
    transform: translateX(-50%) translateY(-50%);
    background: url(http://demosthenes.info/assets/images/polina.jpg) no-repeat;
    background-size: cover; 
}
.buttons {
    position:fixed;
    top:0;
    right: 0;
}
.video-large {
    display: none;
}
.show-button {
    width:50px;
    height:50px;
    background-color:#000;
    display:block;
    cursor:pointer;
    float:left;
    color: #fff;
    text-align:center;
    line-height:50px;
}
.play-button {
    width:50px;
    height:50px;
    background-color:green;
    display:none;
    cursor:pointer;
    float:left;
    color: #fff;
    text-align:center;
    line-height:50px;
}
.pause-button {
    width:50px;
    height:50px;
    background-color:blue;
    display:none;
    cursor:pointer;
    float:left;
    color: #fff;
    text-align:center;
    line-height:50px;
}
.exit-button {
    width:50px;
    height:50px;
    background-color:red;
    display:none;
    cursor:pointer;
    float:left;
    color: #fff;
    text-align:center;
    line-height:50px;
}

JavaScript

$('.show-button').on('click', function () {
    // Just go ahead and pause/reset all the video elements

    $('#video-2')[0].play();
    $('.video-large').fadeIn(400).show();
    $('.pause-button').fadeIn(400).show();
    $('.exit-button').fadeIn(400).show();
    $('#video-1')[0].pause();

});

$('.exit-button').on('click', function () {
    $('.video-large').fadeOut(400).hide();
    $('.pause-button').hide();
    $('.exit-button').hide();
    $('.play-button').hide();
    $('#video-1')[0].play();
});

$("#infoToggler").click(function () {
    $(this).find('div').toggle();
});

$('.pause-button').on('click', function () {
    $('#video-2')[0].pause();
});

$('.play-button').on('click', function () {
    $('#video-2')[0].play();
});

var vid = document.getElementById("video-2");
vid.volume = 0.5;