使用Bootstrap堆叠多个进度条
要在Bootstrap中堆叠多个进度条，您可以尝试运行以下代码
示例
<!DOCTYPE html>
<html>
<head>
<title>Bootstrap Example</title>
<link href = "/bootstrap/css/bootstrap.min.css" rel = "stylesheet">
<script src = "/scripts/jquery.min.js"></script>
<script src = "/bootstrap/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% Complete (success)</span>
</div>
<div class = "progress-bar progress-bar-warning" role = "progressbar"
aria-valuenow = "60" aria-valuemin = "0" aria-valuemax = "100" style = "width: 30%;">
<span class = "sr-only">30% Complete (warning)</span>
</div>
<div class = "progress-bar progress-bar-danger" role = "progressbar"
aria-valuenow = "60" aria-valuemin = "0" aria-valuemax = "100" style = "width: 20%;">
<span class = "sr-only">20%Complete (danger)</span>
</div>
</div>
</body>
</html>