JSFiddle - React, Tailwind, and code Playground

HTML

<div id="main-container" class="css">Anything</div>

CSS

.css {
    background-image:url('http://i.stack.imgur.com/jGlzr.png');
    height:100px;
}

JavaScript

setTimeout(animate, 2000);

function animate() {
    $('#main-container').animate({}, 'fast', function () {
        $(this).css({
            'background-image': 'url(http://i.stack.imgur.com/7YKUD.jpg)'
        });
    });
}