源代码 ：
点击运行
<!DOCTYPE html> <html> <head> <meta charset="utf-8"> <title>Bootstrap 实例 - 堆叠的进度条</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> <div class="progress"> <div class="progress-bar progress-bar-success" role="progressbar" aria-valuenow="60" aria-valuemin="0" aria-valuemax="100" style="width: 40%;"> <span class="sr-only">40% 完成</span> </div> <div class="progress-bar progress-bar-info" role="progressbar" aria-valuenow="60" aria-valuemin="0" aria-valuemax="100" style="width: 30%;"> <span class="sr-only">30% 完成（信息）</span> </div> <div class="progress-bar progress-bar-warning" role="progressbar" aria-valuenow="60" aria-valuemin="0" aria-valuemax="100" style="width: 20%;"> <span class="sr-only">20% 完成（警告）</span> </div> </div> </body> </html>
运行结果