JSFiddle - React, Tailwind, and code Playground

HTML

<div class="info">
			<div class="buttons">
				<p>
					<a href="#modal" data-modal="#modal" class="modal__trigger">Преимущества</a>

				</p>
			</div>
		</div>


	<!-- Modal -->
	<div id="modal" class="modal modal__bg" role="dialog" aria-hidden="true">
		<div class="modal__dialog">
			<div class="modal__content">
				<h1>Преимущества</h1>
				<p>- Полный фотоотчет процесса ремонта и строительства</p>
        <p>- Используем в работе свой транспорт, склады и специализированный инструмент</p>
        <p>- На Вашем объекте инженеры с высшим образованием</p>
        <p>- Гарантия чистоты после монтажных и демонтажных работ</p>
				
				<!-- modal close button -->
				<a href="" class="modal__close demo-close">
       
        
					<svg class="" viewBox="0 0 24 24"><path d="M19 6.41l-1.41-1.41-5.59 5.59-5.59-5.59-1.41 1.41 5.59 5.59-5.59 5.59 1.41 1.41 5.59-5.59 5.59 5.59 1.41-1.41-5.59-5.59z"/><path d="M0 0h24v24h-24z" fill="none"/></svg>
				</a>
				
			</div>
		</div>
	</div>

	


 
  
  
  
  <script>
  

  
  </script>
  
  <script>
  

  
  </script>

CSS

/**
 * Design bitoo.ru
 */
.modal {
  will-change: visibility, opacity;
  display: -webkit-box;
  display: flex;
  -webkit-box-align: center;
          align-items: center;
  -webkit-box-pack: center;
          justify-content: center;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  overflow-y: auto;
  overflow-x: hidden;
  z-index: 1000;
  visibility: hidden;
  opacity: 0;
  -webkit-transition: all 0.5s cubic-bezier(0.23, 1, 0.32, 1);
  transition: all 0.5s cubic-bezier(0.23, 1, 0.32, 1);
  -webkit-transition-delay: $modal-delay;
          transition-delay: $modal-delay;
}


.modal--active {
  visibility: visible;
  opacity: 1;
}
.modal--align-top {
  -webkit-box-align: start;
          align-items: flex-start;
}
.modal__bg {
  background: transparent;
}
.modal__dialog {
  max-width: 600px;
  padding: 1.2rem;
}
.modal__content {
  will-change: transform, opacity;
  position: relative;
  padding: 2.4rem;
  background: #ffebee;
  background-clip: padding-box;
  box-shadow: 0 12px 15px 0 rgba(0,0,0,0.25);
  opacity: 0;
  -webkit-transition: all 0.25s cubic-bezier(0.23, 1, 0.32, 1);
  transition: all 0.25s cubic-bezier(0.23, 1, 0.32, 1);
}
.modal__content--active {
  opacity: 1;
}
.modal__close {
  z-index: 1100;
  cursor: pointer;
}
.modal__trigger {
  position: relative;
  display: inline-block;
  padding: 1.2rem 2.4rem;
  color: rgba(0,0,0,0.7);
  line-height: 1;
  cursor: pointer;
  background: #ffebee;
  box-shadow: 0 2px 5px 0 rgba(0,0,0,0.26);
  -webkit-tap-highlight-color: rgba(0,0,0,0);
  -webkit-user-select: none;
     -moz-user-select: none;
      -ms-user-select: none;
          user-select: none;
  -webkit-transition: all 0.5s cubic-bezier(0.23, 1, 0.32, 1);
  transition: all 0.5s cubic-bezier(0.23, 1, 0.32, 1);
}
.modal__trigger--active {
  z-index: 10;
}
.modal__trigger:hover {
  background: #e5d3d6;
}
#modal__temp {
  will-change: transform, opacity;
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background:...

JavaScript

var Modal = (function() {

  var trigger = $qsa('.modal__trigger'); // what you click to activate the modal
  var modals = $qsa('.modal'); // the entire modal (takes up entire window)
  var modalsbg = $qsa('.modal__bg'); // the entire modal (takes up entire window)
  var content = $qsa('.modal__content'); // the inner content of the modal
	var closers = $qsa('.modal__close'); // an element used to close the modal
  var w = window;
  var isOpen = false;
	var contentDelay = 400; // duration after you click the button and wait for the content to show
  var len = trigger.length;

  // make it easier for yourself by not having to type as much to select an element
  function $qsa(el) {
    return document.querySelectorAll(el);
  }

  var getId = function(event) {

    event.preventDefault();
    var self = this;
    // get the value of the data-modal attribute from the button
    var modalId = self.dataset.modal;
    var len = modalId.length;
    // remove the '#' from the string
    var modalIdTrimmed = modalId.substring(1, len);
    // select the modal we want to activate
    var modal = document.getElementById(modalIdTrimmed);
    // execute function that creates the temporary expanding div
    makeDiv(self, modal);
  };

  var makeDiv = function(self, modal) {

    var fakediv = document.getElementById('modal__temp');

    /**
     * if there isn't a 'fakediv', create one and append it to the button that was
     * clicked. after that execute the function 'moveTrig' which handles the animations.
     */

    if (fakediv === null) {
      var div = document.createElement('div');
      div.id = 'modal__temp';
      self.appendChild(div);
      moveTrig(self, modal, div);
    }
  };

  var moveTrig = function(trig, modal, div) {
    var trigProps = trig.getBoundingClientRect();
    var m = modal;
    var mProps = m.querySelector('.modal__content').getBoundingClientRect();
    var transX, transY, scaleX, scaleY;
    var xc = w.innerWidth / 2;
    var yc = w.innerHeight...