JSFiddle - React, Tailwind, and code Playground

HTML

<body class="bg">3
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</body>

CSS

.bg {

    /*background-image: url(http://pikahinaukset.wpengine.com/wp-content/uploads/2015/06/coverphoto-e1433360465261.jpg);*/
    background-position: center center;
    background-repeat: no-repeat;
    background-attachment: fixed;
    background-size: cover;
    background-image: url(http://pikahinaukset.wpengine.com/wp-content/uploads/2015/06/coverphoto-e1433360465261.jpg) ;
    -webkit-box-shadow: 0 8px 6px -6px black;
    -moz-box-shadow: 0 8px 6px -6px black;
    box-shadow: 0 8px 6px -6px black;

}