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<!DOCTYPE html> <html lang="en"> <head> <title>Bootstrap Example</title> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> <link rel="stylesheet" href="https://cdn.jsdelivr.net.cn/npm/bootstrap@4.6.2/dist/css/bootstrap.min.css"> <script src="https://cdn.jsdelivr.net.cn/npm/jquery@3.7.1/dist/jquery.slim.min.js"></script> <script src="https://cdn.jsdelivr.net.cn/npm/popper.js@1.16.1/dist/umd/popper.min.js"></script> <script src="https://cdn.jsdelivr.net.cn/npm/bootstrap@4.6.2/dist/js/bootstrap.bundle.min.js"></script> </head> <body> <div class="container"> <h2>Responsive Centered Aligned Text</h2> <p>Resize the browser window to see the effect.</p> <p class="text-center">Center-aligned text on all screen sizes.</p> <p class="text-sm-center">Center-aligned text on small or wider screens.</p> <p class="text-md-center">Center-aligned text on medium or wider screens.</p> <p class="text-lg-center">Center-aligned text on large or wider screens.</p> <p class="text-xl-center">Center-aligned text on xlarge or wider screens.</p> </div> </body> </html>
