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<!DOCTYPE html> <html> <head> <title>Bootstrap5 实例</title> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> <link href="https://cdn.staticfile.org/twitter-bootstrap/5.1.1/css/bootstrap.min.css" rel="stylesheet"> <script src="https://cdn.staticfile.org/twitter-bootstrap/5.1.1/js/bootstrap.bundle.min.js"></script> </head> <body> <div class="container mt-3"> <div class="p-3 mb-2 bg-primary text-white">.bg-primary</div> <div class="p-3 mb-2 bg-secondary text-white">.bg-secondary</div> <div class="p-3 mb-2 bg-success text-white">.bg-success</div> <div class="p-3 mb-2 bg-danger text-white">.bg-danger</div> <div class="p-3 mb-2 bg-warning text-dark">.bg-warning</div> <div class="p-3 mb-2 bg-info text-dark">.bg-info</div> <div class="p-3 mb-2 bg-light text-dark">.bg-light</div> <div class="p-3 mb-2 bg-dark text-white">.bg-dark</div> <div class="p-3 mb-2 bg-body text-dark">.bg-body</div> <div class="p-3 mb-2 bg-white text-dark">.bg-white</div> <div class="p-3 mb-2 bg-transparent text-dark">.bg-transparent</div> </div> </body> </html>
运行结果：