JSFiddle - React, Tailwind, and code Playground

HTML

<div id="cover"></div>
<img src="http://upload.wikimedia.org/wikipedia/commons/3/3e/Tokyo_Sky_Tree_2012.JPG" />

CSS

#cover {
    background: url("http://www.aveva.com/Images/ajax-loader.gif") no-repeat scroll center center #FFF;
    position: absolute;
    height: 100%;
    width: 100%;
}

JavaScript

$(window).load(function(){
    $('#cover').fadeOut(1000);
    
});