Random Kerning

HTML

<body>


  <div id="textarea" class="textarea" contenteditable>

    hello

  </div>

</body>

CSS

#textarea {
  border: black 2px solid;
  height: 300px;
  width: 300px;
  font-size: 24px;
  word-break: break-all;
  display: inline-block;
}

JavaScript

function() {
    $('#textarea').keypress(function() {
      var KerningRandom = Math.floor((Math.random() * 90) - 20);
      $(this).css('letter-spacing', KerningRandom);
    });
    };