JSFiddle - React, Tailwind, and code Playground

HTML

<div id="box">
    <div id="knockout">&nbsp;</div>
</div>

CSS

BODY{
    background-color: #aa0000;
}

#box{ 
    position: relative;
    overflow: hidden;
}

#knockout {
    background: url("http://medoragroup.com/temp/circle-knockout.png") no-repeat;
    width: 105px;
    height: 180px;
    margin: 0 auto;
}

#knockout:before{
    content: " ";
    position: absolute;
    left: -52px;
    width: 50%;
    height: 100px;
    background-color: #000;
}

#knockout:after{
    content: " ";
    position: absolute;
    right: -52px;
    width: 50%;
    height: 100px;
    background-color: #000;
}