JSFiddle - React, Tailwind, and code Playground

HTML

<script src="https://rawgithub.com/jashkenas/underscore/1.5.1/underscore-min.js"></script>
<script src="https://rawgithub.com/postaljs/monologue.js/master/lib/monologue.min.js"></script>
<link rel="stylesheet" href="//netdna.bootstrapcdn.com/bootstrap/3.0.0-rc1/css/bootstrap.min.css">
<script src="http://netdna.bootstrapcdn.com/bootstrap/3.0.0-rc1/js/bootstrap.min.js"></script>
<script src="https://rawgithub.com/postaljs/postal.js/master/lib/postal.min.js"></script>
<script src="https://rawgithub.com/postaljs/monopost.js/master/lib/monopost.min.js"></script>
<script src="https://rawgithub.com/postaljs/postal.diagnostics/master/lib/postal.diagnostics.min.js"></script>
<script src="https://rawgithub.com/ifandelse/37dd214aaa582a77f1b0/raw/c1c5d40183fb15308a921c1f5207e83f8a9cc9f8/IndexedDB_Sillyness.js"></script>

CSS

#prefList {
    margin-top:2em;
    width:30em;
}
input[type="text"] {
    width: 12.5em;
}

JavaScript

var b = new Blob(["➀➁➂ 가 Test"],{encoding:"ANSI",type:"text/plain;charset=ANSI"});
var url = URL.createObjectURL(b);
window.open(url,"_blank","");