html运行实例（bs_progressbar

代码示例：（标识：bs_progressbar_7）
<!DOCTYPE html>
<html lang="en">
<head>
  <title>Bootstrap 实例</title>
  <meta charset="utf-8">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link href="https://cdn.bootcdn.net/ajax/libs/twitter-bootstrap/5.1.2/css/bootstrap.min.css" rel="stylesheet">
  <script src="https://cdn.bootcdn.net/ajax/libs/twitter-bootstrap/5.1.2/js/bootstrap.min.js"></script>
</head>
<body>

<div class="p-4">
  <h2>多个进度条</h2>
  <p>通过将多个进度条放入同一个 class="progress" 的 div，创建一个堆叠进度条：</p> 
  <div class="progress">
    <div class="progress-bar bg-success" style="width:40%">
      空闲空间
    </div>
    <div class="progress-bar bg-warning" style="width:10%">
      警告
    </div>
    <div class="progress-bar bg-danger" style="width:20%">
      危险
    </div>
  </div>
</div>

</body>
</html>