JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://cdnjs.cloudflare.com/ajax/libs/scrollmonitor/1.2.0/scrollMonitor.js"></script>
<script src="https://cdnjs.cloudflare.com/ajax/libs/scrollmonitor/1.2.0/scrollMonitor.js"></script>


<div class="col-md-12 ">
    <div class="box">
        <img src="https://dummyimage.com/800x800" class="icon"/>
        <div class="rad-slideshow-item active-adjacent">
         
          <div class="rad-asset-wrapper">
            <h1>WEB<br/>DESIGN</h1>
          </div>
        </div>
        
    </div>
      <div class="box">
        <img src="https://dummyimage.com/800x800" class="icon"/>
        <div class="rad-slideshow-item active-adjacent">
         
          <div class="rad-asset-wrapper">
            <h1>WEB<br/>DESIGN</h1>
          </div>
        </div>
        
    </div>
     
</div>

CSS

.col-md-12 {
    height: 1500px;
    padding-top: 1000px;
}
.box{
  position:relative;
}
.animated {
      opacity: 1;
    visibility: visible;
    transition: opacity 1s 0s, visibility 1s 0s;
    z-index: 2;
    position: fixed;
    top: 0;
    left: 0;
}
.rad-slideshow-item {
    /* position: relative; */
}
.rad-slideshow-item .rad-asset-wrapper {
 
    display: block;
    padding: 0;
    position: absolute;
    top: 0;
    left: 0;
    overflow: hidden;
    z-index: 3;
}
.animated .rad-slideshow-item.active-adjacent div.rad-asset-wrapper {
background: #000;
    opacity: 0;
    visibility: hidden;
    position: fixed;
    top: 0;
    left: 0;
    transition: opacity 0s 0s, visibility 0s 0s;
    z-index: 1;
    display: none;
 }
.animated .rad-slideshow-item.active-adjacent div.rad-asset-wrapper {
  display: block;
    transform: translate3d(0, 0, 0);
    transition: opacity 0s 1s, visibility 0s 1s;
}
.rad-spinner {
    position: absolute;
    top: 50%;
    left: 50%;
    z-index: 2;
    transform: translate3d(-50%, -50%, 0);
}

JavaScript

var el = $(".box");

var watcher = scrollMonitor.create( el );

watcher.enterViewport(function() {
    console.log( 'I have entered the viewport' );
 		el.addClass('animated flip').css('background', 'red');
});

watcher.exitViewport(function() {
 console.log( 'I have left the viewport' );
 el.removeClass('animated flip').css('background', 'none');
});