JSFiddle - React, Tailwind, and code Playground

HTML

<!doctype html5>
<head>
<title>CdS Home</title>
<link rel='stylesheet' href='index.css'/>
</head> 
<div class="accordian">
  <ul>
    <li>
      <div class="image_title">
        <a href="#">Event 1</a>
      </div>
      <a href="#">
        <img src="https://images.duckduckgo.com/iu/?u=http%3A%2F%2Fwww.wallpaperup.com%2Fuploads%2Fwallpapers%2F2015%2F01%2F30%2F606369%2F5510b472cf9126e305bb941e8ec8d9e8.jpg&f=1" />
      </a>
    </li>
    <li>
      <div class="image_title">
        <a href="#">Event 2</a>
      </div>
      <a href="#">
        <img src="https://images.duckduckgo.com/iu/?u=https%3A%2F%2Fwww.betaseries.com%2Fimages%2Ffonds%2Foriginal%2F9296_1415901083.jpg&f=1" />
      </a>
    </li>
    <li>
      <div class="image_title">
        <a href="#">Event 3</a>
      </div>
      <a href="#">
        <img src="https://images.duckduckgo.com/iu/?u=http%3A%2F%2Fwww.wallpaperup.com%2Fuploads%2Fwallpapers%2F2015%2F01%2F30%2F606369%2F5510b472cf9126e305bb941e8ec8d9e8.jpg&f=1" />
      </a>
    </li>
  </ul>
</div>

CSS

/*Now the styles*/

* {
  margin: 0;
  padding: 0;
}

body {
  background: #ccc;
  font-family: arial, verdana, tahoma;
}


/*Time to apply widths for accordian to work
Width of image = 1860px
total images = 3
so width of hovered image = 1860px
width of un-hovered image = 40px - you can set this to anything
so total container width = 1860 + 40*2 = 1920px;
default width = 1920/3 = 640px;
*/

.accordian {
  width: 1920px;
  height: 1000px;
  overflow: hidden;
  /*Time for some styling*/
  margin: 0px auto;
  box-shadow: 0 0 10px 1px rgba(0, 0, 0, 0.35);
  -webkit-box-shadow: 0 0 10px 1px rgba(0, 0, 0, 0.35);
  -moz-box-shadow: 0 0 10px 1px rgba(0, 0, 0, 0.35);
}



/*A small hack to prevent flickering on some browsers*/

.accordian ul {
  width: 2000px;
  /*This will give ample space to the last item to move
	instead of falling down/flickering during hovers.*/
}

.accordian li {
  position: relative;
  display: block;
  width: 640px;
  float: left;
  border-left: 1px solid #888;
  box-shadow: 0 0 25px 10px rgba(0, 0, 0, 0.5);
  -webkit-box-shadow: 0 0 25px 10px rgba(0, 0, 0, 0.5);
  -moz-box-shadow: 0 0 25px 10px rgba(0, 0, 0, 0.5);
  /*Transitions to give animation effect*/
  transition: all 0.5s;
  -webkit-transition: all 0.5s;
  -moz-transition: all 0.5s;
  /*If you hover on the images now you should be able to 
	see the basic accordian*/
}


/*Reduce with of un-hovered elements*/

.accordian ul:hover li {
  width: 40px;
}


/*Lets apply hover effects now*/


/*The LI hover style should override the UL hover style*/

.accordian ul li:hover {
  width: 1860px;
}

.accordian li img {
  display: block;
}


/*Image title styles*/

.image_title {
  background: rgba(0, 0, 0, 0.5);
  position: absolute;
  left: 0;
  bottom: 0;
  width: 1860px;
}

.image_title a {
  display: block;
  color: #fff;
  text-decoration: none;
  padding: 60px;
  font-size: 30px;
}