JSFiddle - React, Tailwind, and code Playground

HTML

<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.4.0/css/bootstrap.min.css">
    <script
  src="https://code.jquery.com/jquery-3.4.1.js"
  integrity="sha256-WpOohJOqMqqyKL9FccASB9O0KwACQJpFTUBLTYOVvVU="
  crossorigin="anonymous"></script>
    <textarea id="note"></textarea>
   <button type="button" class="btn pull-right btn-success btn-sm" title="Copy Information"><span class="glyphicon glyphicon-copy" aria-hidden="true"></span></button>

CSS

body {
  background: #20262E;
  padding: 20px;
  font-family: Helvetica;
}

#banner-message {
  background: #fff;
  border-radius: 4px;
  padding: 20px;
  font-size: 25px;
  text-align: center;
  transition: all 0.2s;
  margin: 0 auto;
  width: 300px;
}

button {
  background: #0084ff;
  border: none;
  border-radius: 5px;
  padding: 8px 14px;
  font-size: 15px;
  color: #fff;
}

#banner-message.alt {
  background: #0084ff;
  color: #fff;
  margin-top: 40px;
  width: 200px;
}

#banner-message.alt button {
  background: #fff;
  color: #000;
}

JavaScript

$('.btn').on('click', function(){
	var note = $("textarea#note").val();
	CopyToClipboard(note);
});

function CopyToClipboard(note) {
    function listener(e) {
        e.clipboardData.setData("text/html", note);
        e.clipboardData.setData("text/plain", note);
        e.preventDefault();
    }
    document.addEventListener("copy", listener);
    document.execCommand("copy");
    document.removeEventListener("copy", listener);
}