JSFiddle - React, Tailwind, and code Playground

HTML

<body>

  <h2 style="text-align:center">Modal Albums</h2>

  <div class="row">
    <div class="column">
      <img src="https://www.yosemitehikes.com/images/wallpaper/yosemitehikes.com-bridalveil-winter-1200x800.jpg" style="max-width:100%" onclick="openModal();currentSlide(1)" class="hover-shadow cursor">
    </div>
  </div>

  <div id="myModal" class="modal">
    <span class="close cursor" onclick="closeModal()">&times;</span>
    <div class="modal-content">

      <div class="mySlides">
        <div class="numbertext">1 / 4</div>
        <img src="http://chasingseals.com/wp-content/uploads/2014/02/greenlandBanner2000x800.jpg" class="img">
      </div>

      <div class="mySlides">
        <div class="numbertext">2 / 4</div>
        <img src="http://www.catholicevangelism.org/wp-content/uploads/2013/06/1200x800.gif" class="img">
      </div>

      <div class="mySlides">
        <div class="numbertext">3 / 4</div>
        <img src="http://www.a1carpet-to.com/wp-content/uploads/2015/08/600x400.png" class="img">
      </div>

      <div class="mySlides">
        <div class="numbertext">4 / 4</div>
        <img src="https://support.kickofflabs.com/wp-content/uploads/2016/06/800x1200.png" class="img">
      </div>

      <a class="prev" onclick="plusSlides(-1)">&#10094;</a>
      <a class="next" onclick="plusSlides(1)">&#10095;</a>

    </div>
  </div>

CSS

body {
   font-family: Verdana, sans-serif;
   margin: 0;
 }
 
 * {
   box-sizing: border-box;
 }
 .img {
   max-width:100%;
   max-height: 100%;
   width: auto;
   heigth: auto;
   object-fit: scale-down;
 }
 .row > .column {
   padding: 0 8px;
 }
 
 .row:after {
   content: "";
   display: table;
   clear: both;
 }
 
 .column {
   float: left;
   width: 25%;
 }
 /* The Modal (background) */
 
 .modal {
   display: none;
   position: fixed;
   z-index: 1;
   padding-top: 100px;
   left: 0;
   top: 0;
   width: 100%;
   height: 100%;
   overflow: auto;
   background: rgba(0, 0, 0, 0.9);
 }
 /* Modal Content */
 
 .modal-content {
   position: relative;
   background-color: rgba(0, 0, 0, 0.9);
   margin: auto;
   padding: 0;
   width: 90%;
   max-width: 1200px;
 }
 /* The Close Button */
 
 .close {
   color: white;
   position: absolute;
   top: 10px;
   right: 25px;
   font-size: 35px;
   font-weight: bold;
 }
 
 .close:hover,
 .close:focus {
   color: #999;
   text-decoration: none;
   cursor: pointer;
 }
 
 .mySlides {
   display: none;
 }
 
 .cursor {
   cursor: pointer
 }
 /* Next & previous buttons */
 
 .prev,
 .next {
   cursor: pointer;
   position: absolute;
   top: 50%;
   width: auto;
   padding: 16px;
   margin-top: -50px;
   color: white;
   font-weight: bold;
   font-size: 20px;
   transition: 0.6s ease;
   border-radius: 0 3px 3px 0;
   user-select: none;
   -webkit-user-select: none;
 }
 /* Position the "next button" to the right */
 
 .next {
   right: 0;
   border-radius: 3px 0 0 3px;
 }
 /* On hover, add a black background color with a little bit see-through */
 
 .prev:hover,
 .next:hover {
   background-color: rgba(0, 0, 0, 0.8);
   text-decoration: none;
 }
 /* Number text (1/3 etc) */
 
 .numbertext {
   color: #f2f2f2;
   font-size: 12px;
   padding: 8px 12px;
   position: absolute;
   top: 0;
 }
 
 img {
   margin-bottom: -4px;
 }
 
 t img.hover-shadow {
   transition: all .2s ease-in-out;
 }
 
 .hover-shadow:hover {
   transform:...

JavaScript

function openModal() {
  document.getElementById('myModal').style.display = "block";
}
function closeModal() {
  document.getElementById('myModal').style.display = "none";
}

var slideIndex = 1;
showSlides(slideIndex);

function plusSlides(n) {
  showSlides(slideIndex += n);
}

function currentSlide(n) {
  showSlides(slideIndex = n);
}

function showSlides(n) {
  var i;
  var slides = document.getElementsByClassName("mySlides");
  var dots = document.getElementsByClassName("demo");
  var captionText = document.getElementById("caption");
  if (n > slides.length) {
    slideIndex = 1
  }
  if (n < 1) {
    slideIndex = slides.length
  }
  for (i = 0; i < slides.length; i++) {
    slides[i].style.display = "none";
  }
  for (i = 0; i < dots.length; i++) {
    dots[i].className = dots[i].className.replace(" active", "");
  }
  slides[slideIndex - 1].style.display = "block";
  dots[slideIndex - 1].className += " active";
  captionText.innerHTML = dots[slideIndex - 1].alt;
}