JSFiddle - React, Tailwind, and code Playground

HTML

<div id="background">
</div>

CSS

#background {
	position: absolute;
	left: 10px;
	top: 10px;
	width: 600px;
	height: 600px;
	
	background-image: url(http://images.apple.com/home/images/osx_hero.jpg);
    
    -webkit-filter	: blur(2px);
    -moz-filter	: blur(2px);
    -ms-filter	: blur(2px);
    -o-filter 	: blur(2px);
    filter		: blur(2px);
}