JSFiddle - React, Tailwind, and code Playground

HTML

<script src="//netdna.bootstrapcdn.com/bootstrap/3.1.1/js/bootstrap.min.js"></script>
<link rel="stylesheet" href="//netdna.bootstrapcdn.com/bootswatch/3.1.1/united/bootstrap.min.css">
<div aria-hidden="false" style="display: block;" class="bootbox modal fade in" tabindex="-1" role="dialog"><div class="modal-dialog"><div class="modal-content"><div class="modal-header"><button type="button" class="bootbox-close-button close" data-dismiss="modal" aria-hidden="true">×</button><h4 class="modal-title">Please login</h4></div><div class="modal-body"><div style="padding-bottom: 50px;" class="bootbox-body"><form class="form-horizontal col-md-12" method="post">
    <fieldset class="col-md-12">
        <!-- Form Name -->
        <!-- Text input-->
        <div class="form-group">
            <label class="col-md-3 control-label" for="username">Username</label>
            <div class="col-md-7 ">
                <input id="username" name="username" placeholder="Hi, I am..." class="form-control input-md" value="" type="text">
            </div>
        </div>
        <!-- Password input-->
        <div class="form-group">
            <label class="col-md-3 control-label" for="password">Password</label>
            <div class="col-md-7">
                <input id="password" name="password" placeholder="My secret pass is..." class="form-control input-md" type="password">
            </div>
        </div>
        <input id="target" name="target" placeholder="" class="form-control input-md" value="" type="hidden">
        <!-- Button -->
        <div class="form-group">
            <label class="col-md-3 control-label" for="login"></label>
            <div class="col-md-7">
                <button id="login" name="login" class="btn btn-success">Login on OpenCubes</button>
            </div>
        </div>
    </fieldset>
</form></div></div><div class="modal-footer"><button data-bb-handler="cancel" type="button" class="btn btn-link">cancel</button></div></div></div></div>