切换布局
显示结果
<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> <title>Bootstrap4 带有附加内容的警报框 - 迹忆客(jiyik.com)</title> <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@4.6.0/dist/css/bootstrap.min.css"> <script src="https://code.jquery.com/jquery-3.5.1.min.js"></script> <script src="https://cdn.jsdelivr.net/npm/bootstrap@4.6.0/dist/js/bootstrap.bundle.min.js"></script> <style> .m-4{ margin: 20px; } </style> </head> <body> <div class="m-4"> <div class="alert alert-danger alert-dismissible fade show"> <h4 class="alert-heading"><i class="bi-exclamation-octagon-fill"></i> Oops! Something went wrong.</h4> <p>Please enter a valid value in all the required fields before proceeding. If you need any help just place the mouse pointer above info icon next to the form field.</p> <hr> <p class="mb-0">Once you have filled all the details, click on the 'Next' button to continue.</p> <button type="button" class="close" data-dismiss="alert">×</button> </div> </div> </body> </html>