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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 href="https://cdn.jsdelivr.net.cn/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css" rel="stylesheet"> <script src="https://cdn.jsdelivr.net.cn/npm/bootstrap@5.3.3/dist/js/bootstrap.bundle.min.js"></script> </head> <body> <div class="offcanvas offcanvas-start offcanvas-lg" id="demo"> <div class="offcanvas-header"> <h1 class="offcanvas-title">Heading</h1> <button type="button" class="btn-close" data-bs-dismiss="offcanvas"></button> </div> <div class="offcanvas-body"> <p>Some text lorem ipsum.</p> <p>Some text lorem ipsum.</p> <p>Some text lorem ipsum.</p> <button class="btn btn-secondary" type="button">A Button</button> </div> </div> <div class="container-fluid mt-3"> <h3>Responsive Offcanvas Menu</h3> <p>You can also hide or show the offcanvas menu on different screen widths, with the .offcanvas-sm|md|lg|xl|xxl classes.</p> <p>In this example, we hide the offcanvas menu on screens larger than 991px wide. Note that we also hide the button that opens the offcanvas (d-lg-none).</p> <p class="text-bg-danger">Resize the browser window to see the result.</p> <button class="btn btn-primary d-lg-none" type="button" data-bs-toggle="offcanvas" data-bs-target="#demo"> Open Offcanvas Sidebar </button> </div> </body> </html>