<!DOCTYPE html> <html lang="en"> <head> <title>Bootstrap 实例</title> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> <link href="https://cdn.bootcdn.net/ajax/libs/twitter-bootstrap/5.1.2/css/bootstrap.min.css" rel="stylesheet"> <script src="https://cdn.bootcdn.net/ajax/libs/twitter-bootstrap/5.1.2/js/bootstrap.min.js"></script> </head> <body> <div class="p-4"> <h2>卡片页眉和页脚</h2> <div class="card"> <div class="card-header">页眉</div> <div class="card-body">内容</div> <div class="card-footer">页脚</div> </div> </div> </body> </html>