JSFiddle - React, Tailwind, and code Playground

HTML

<div id="testDiv">
        <div class='testimgdiv'>
            <img class="testimg" src="http://i.imgur.com/jgNcbMd.jpg" />
        </div>
        <div class='testimgdiv'>
            <img class="testimg" src="http://i.imgur.com/jgNcbMd.jpg" />
        </div>
        <div class='testimgdiv'>
            <img class="testimg" src="http://i.imgur.com/jgNcbMd.jpg" />
        </div>
        <div class='testimgdiv'>
            <img class="testimg" src="http://i.imgur.com/jgNcbMd.jpg" />
        </div>
        <div class='testimgdiv'>
            <img class="testimg" src="http://i.imgur.com/jgNcbMd.jpg" />
        </div>
        <div class='testimgdiv'>
            <img class="testimg" src="http://i.imgur.com/jgNcbMd.jpg" />
        </div>
    </div>

CSS

.testimg{
	height: 100%;
	width: 100%;
}
#testDiv{
	width: 400px;
	overflow: auto;
	float: left;
	overflow-y:hidden;
	border:1px solid black; 
}
.testimgdiv{
	width: 120px;
	height: 100px;
	float: left;
  display: inline-block;
}