源代码 ：
点击运行
<!DOCTYPE html> <html> <head> <title>Bootstrap 实例</title> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> <link rel="stylesheet" href="https://cdn.staticfile.org/twitter-bootstrap/4.3.1/css/bootstrap.min.css"> <script src="https://cdn.staticfile.org/jquery/3.2.1/jquery.min.js"></script> <script src="https://cdn.staticfile.org/popper.js/1.15.0/umd/popper.min.js"></script> <script src="https://cdn.staticfile.org/twitter-bootstrap/4.3.1/js/bootstrap.min.js"></script> </head> <body> <div class="container"> <h2>多种颜色卡片</h2> <div class="card"> <div class="card-body">Basic card</div> </div> <br> <div class="card bg-primary text-white"> <div class="card-body">Primary card</div> </div> <br> <div class="card bg-success text-white"> <div class="card-body">Success card</div> </div> <br> <div class="card bg-info text-white"> <div class="card-body">Info card</div> </div> <br> <div class="card bg-warning text-white"> <div class="card-body">Warning card</div> </div> <br> <div class="card bg-danger text-white"> <div class="card-body">Danger card</div> </div> <br> <div class="card bg-secondary text-white"> <div class="card-body">Secondary card</div> </div> <br> <div class="card bg-dark text-white"> <div class="card-body">Dark card</div> </div> <br> <div class="card bg-light text-dark"> <div class="card-body">Light card</div> </div> </div> </body> </html>
运行结果