JSFiddle - React, Tailwind, and code Playground

HTML

<div class="small-4 columns">

    <div class="image-wrapper overlay-fade-in">
      
      <img src="http://static.brazzers.com/scenes/9499/preview/img/01.jpg" />
      
      <div class="image-overlay-content">
      
      
        <h2>.overlay-fade-in</h2>
     
      </div>
    
    </div>

CSS

.image-wrapper {
  width: 100%;
  height: 100%;
  border: 1px solid rgba(0, 0, 0, 0.04);
  overflow: hidden;
  position: absolute;
  text-align: center;
  border-radius: 4px; }

.image-overlay-content {
  width: 100%;
  height: 100%;
  position: absolute;
  overflow: hidden;
  top: 0;
  left: 0;
  }


.overlay-fade-in img {
  transition: all 0.2s linear; }

.overlay-fade-in .image-overlay-content {
  opacity: 0;
  background-color: rgba(0, 0, 0, 0.4);
  transition: all 0.4s ease-in-out; }


.overlay-fade-in:hover .image-overlay-content {
  opacity: 1; }