JSFiddle - React, Tailwind, and code Playground

HTML

<div id="el">omg</div>

CSS

#el {
    background: url('http://farm1.static.flickr.com/92/233508614_52027e9e6f_s.jpg');
    background: url('http://farm1.static.flickr.com/87/232861299_0cd4fb4042_s.jpg');
    width: 100px;
    height: 100px;
}