twitter-bootstrap – Bootstrap在列表中拉出右侧按钮

<div class="container">
    <ul class="list-group">
        <li class="list-group-item">
            userA <span class="label label-default">admin</span>
            <span class="pull-right button-group">
                <a href="/admin/userA" class="btn btn-primary"><span class="glyphicon glyphicon-edit"></span> Edit</a> 
                <button type="button" class="btn btn-danger"><span class="glyphicon glyphicon-remove"></span> Delete</button>
            </span>
        </li>
    </ul>
</div>

我想让盒子更大,使按钮适合,同时保持文本/标签垂直居中.或者,将按钮向上移动到框内也行.我正在使用bootstrap 3.2.欢迎任何建议.谢谢.