Bootstrap类panel-primary的用法
Bootstrap中的面板主要类是上下文状态类。是的，它是蓝色的。
您可以尝试运行以下代码以在Bootstrap中实现面板主要类
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 = "panel panel-primary">
<div class = "panel-heading">
<h3 class = "panel-title">Panel title</h3>
</div>
<div class = "panel-body">
This is a Basic panel
</div>
</div>
</body>
</html>