JSFiddle - React, Tailwind, and code Playground
HTML
<link href="//netdna.bootstrapcdn.com/twitter-bootstrap/2.2.1/css/bootstrap-combined.min.css" rel="stylesheet">
<script src="//netdna.bootstrapcdn.com/twitter-bootstrap/2.2.1/js/bootstrap.min.js"></script>
<form class="form-horizontal" id="new_bookmark" method="post">
<div class="control-group">
<label class="control-label" for="bookmark_title">Title</label>
<div class="controls">
<input id="bookmark_title" name="bookmark[title]" size="30" type="text" value="">
</div>
</div>
<div class="control-group error">
<div class="control-group"><label class="control-label" for="bookmark_url">Url</label></div>
<div class="controls">
<div class="control-group"><input id="bookmark_url" name="bookmark[url]" size="30" type="text" value=""></div>
</div>
</div>
</form>