JSFiddle - React, Tailwind, and code Playground

HTML

<div id="glykopeels" onload="loadImage()">Glykopeels Content</div>
<div id="facials" onload="loadImage2()">Facials Content</div>

CSS

#glykopeels{
        background: #ebebeb url(http://lamininbeauty.co.za/images/products/preloader.gif) no-repeat top right;
        background-size: contain;
    height: 200px;
    }
#facials{
    background: #ebebeb url(http://lamininbeauty.co.za/images/products/preloader.gif) no-repeat top right;
    background-size: contain;
    height: 200px;
    }

JavaScript

document.getElementById('glykopeels').style.backgroundImage = 'url(http://lamininbeauty.co.za/images/products/glykopeel.jpg)';
document.getElementById('facials').style.backgroundImage = 'url(http://lamininbeauty.co.za/images/products/facial.jpg)';