<!DOCTYPE html>
<html>
    <head>
        <meta charset="utf-8"> 
        <title>Bootstrap 实例 - 文本框</title>
        <link rel="stylesheet" href="https://cdn.staticfile.org/twitter-bootstrap/3.3.7/css/bootstrap.min.css">  
        <script src="https://cdn.staticfile.org/jquery/2.1.1/jquery.min.js"></script>
        <script src="https://cdn.staticfile.org/twitter-bootstrap/3.3.7/js/bootstrap.min.js"></script>
    </head>
    <body>

        <form role="form">
            <div class="form-group">
                <label for="name">文本框</label>
                <textarea class="form-control" rows="3"></textarea>
            </div>
        </form>

    </body>
</html>