JSFiddle - React, Tailwind, and code Playground

HTML

<div class="wall">
    <div>
        <img src="http://biomon.org/wp-content/3_3_0sciurus_vulgaris.thumbnail.jpg">
        <img src="http://biomon.org/wp-content/3_3_0sciurus_vulgaris.thumbnail.jpg">
        <img src="http://biomon.org/wp-content/3_3_0sciurus_vulgaris.thumbnail.jpg">
        <img src="http://biomon.org/wp-content/3_3_0sciurus_vulgaris.thumbnail.jpg">
        <img src="http://biomon.org/wp-content/3_3_0sciurus_vulgaris.thumbnail.jpg">
        <img src="http://biomon.org/wp-content/3_3_0sciurus_vulgaris.thumbnail.jpg">
        <img src="http://biomon.org/wp-content/3_3_0sciurus_vulgaris.thumbnail.jpg">
        <img src="http://biomon.org/wp-content/3_3_0sciurus_vulgaris.thumbnail.jpg">
        <img src="http://biomon.org/wp-content/3_3_0sciurus_vulgaris.thumbnail.jpg">
        <img src="http://biomon.org/wp-content/3_3_0sciurus_vulgaris.thumbnail.jpg">
        <img src="http://biomon.org/wp-content/3_3_0sciurus_vulgaris.thumbnail.jpg">
        <img src="http://biomon.org/wp-content/3_3_0sciurus_vulgaris.thumbnail.jpg">
    </div>
</div>

CSS

.wall { width: 515px; -moz-box-shadow: 2px 2px 8px #888; -webkit-box-shadow: 2px 2px 8px #888; box-shadow: 2px 2px 8px #888; overflow: hidden; }
.wall div { background: transparent; margin: -1px -1px 0 0; }
img { float: left; margin: 1px 1px 0 0; }