JSFiddle - React, Tailwind, and code Playground

HTML

<div class="container">
    <div class="row">
        <div class="span4 offset4">
            <div id="login-panel">
                <div class="well bordered clearfix">
                    <div class="text-center">
                        <div class="page-header" style="border-bottom: none; margin: 0;">
                            <img src="library/img/logo-01.png"/>
                        </div>
                    </div>
                    <form method="POST" action="#" accept-charset="UTF-8" class="">
                        <legend>App name</legend>
                        <div class="control-group ">
                            <!-- username field -->
                            <div class="controls">
                                <label>Email</label>
                                <input type="text" name="email" class= "full-width" value="" id="email" placeholder="Your email address">
                            </div>
                        </div>

                        <div class="control-group">
                            <label>Password</label>
                            <!-- password field -->
                            <input type="password" name="password" id="password" placeholder="Password">
                        </div>
                        <div class="control-group ">
                            <p>
                                <input class="btn btn-default pull-left" type="submit" value="Sign-up">
                                <input class="btn btn-primary pull-right" type="submit" value="Login">
                            </p>
                        </div>
                    </form>
                </div>
            </div>
        </div>
    </div> <!-- end row -->
</div> <!-- end container -->

CSS

@import url('http://twitter.github.com/bootstrap/assets/css/bootstrap.css');

input.full-width {
    box-sizing: border-box;
    width: 100%;
    height: 30px;
}