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
<!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>