源代码:
<!DOCTYPE html> <html> <head> <meta name="viewport" content="width=device-width, initial-scale=1"> <link rel="stylesheet" href="http://apps.bdimg.com/libs/bootstrap/3.2.0/css/bootstrap.min.css"> </head> <body> <div class="container"> <h2>排版</h2> <p>这是一个普通的段落。</p> <p class="small">这是个文字更小。</p> <p>这是一个普通的段落。</p> </div> <script src="http://apps.bdimg.com/libs/jquery/2.1.1/jquery.min.js"></script> <script src="http://apps.bdimg.com/libs/bootstrap/3.2.0/js/bootstrap.min.js"></script> </body> </html>
运行结果：