代码示例：（标识：bs_progressbar_4）
<!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>彩色进度条</h2>
<p>请使用任何上下文颜色类来更改进度条的颜色：</p>
<!-- Blue -->
<div class="progress">
<div class="progress-bar" style="width:10%"></div>
</div><br>
<!-- Green -->
<div class="progress">
<div class="progress-bar bg-success" style="width:20%"></div>
</div><br>
<!-- Turquoise -->
<div class="progress">
<div class="progress-bar bg-info" style="width:30%"></div>
</div><br>
<!-- Orange -->
<div class="progress">
<div class="progress-bar bg-warning" style="width:40%"></div>
</div><br>
<!-- Red -->
<div class="progress">
<div class="progress-bar bg-danger" style="width:50%"></div>
</div><br>
<!-- White -->
<div class="progress border">
<div class="progress-bar bg-white" style="width:60%"></div>
</div><br>
<!-- Grey -->
<div class="progress">
<div class="progress-bar bg-secondary" style="width:70%"></div>
</div><br>
<!-- Light Grey -->
<div class="progress border">
<div class="progress-bar bg-light" style="width:80%"></div>
</div><br>
<!-- Dark Grey -->
<div class="progress">
<div class="progress-bar bg-dark" style="width:90%"></div>
</div>
</div>
</body>
</html>
