使用.alert-info类创建一个浅蓝色警报框，指示一些信息。
您可以尝试运行以下代码以在Bootstrap中实现.alert-info类-
<!DOCTYPE html> <html> <head> <title>Bootstrap Example</title> <link rel = "stylesheet" href = "https://maxcdn.bootstrapcdn.com/bootstrap/4.1.1/css/bootstrap.min.css"> <script src = "https://cdn.staticfile.org/jquery/3.3.1/jquery.min.js"></script> <script src = "https://maxcdn.bootstrapcdn.com/bootstrap/4.1.1/js/bootstrap.min.js"></script> </head> <body> <div class = "container"> <div class = "alert alert-info"> <p>Information!</p> <p>Add information here...</p> </div> </div> </body> </html>