JSFiddle - React, Tailwind, and code Playground

HTML

<div class="parent">
    <img class="child" src="http://lorempixel.com/200/200/sports/" />
</div>

<br>

<div class="parent">
    <div class="child" style="width:200px;height:200px;background:#000;"></div>
</div>

CSS

.parent {
    width: 200px;
    height: 200px;
    overflow: hidden;
}
.child {
    -webkit-filter: blur(10px);
}