要显示Bootstrap类，请使用.show类。您可以尝试运行以下代码以使类可见
<!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 = "row" style = "padding: 91px 100px 19px 50px;"> <div class = "show" style = "left-margin:10px; width:300px; background-color:#ccc;"> This class is visible. </div> <div class = "hidden" style = "width:200px; background-color:#ccc;"> This is an example for hide class. This will be hidden. </div> </div> </body> </html>