JSFiddle - React, Tailwind, and code Playground

HTML

<div id="uno"></div>
<div id="dos"></div>

<img src="http://jln.es/img/cielo.svg">
<img src="http://upload.wikimedia.org/wikipedia/en/2/22/Heckert_GNU_white.svg">

CSS

div {
    height: 200px;
    border: 1px solid;
}

div#uno {
    background-image: url(http://jln.es/img/cielo.svg)
}

div#dos {
    background-image: url(http://upload.wikimedia.org/wikipedia/en/2/22/Heckert_GNU_white.svg)
}