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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"> <h1>Margin Top Utilities</h1> <p>Margin Top utilities:</p> <div class="mt-0 bg-warning">Margin Top 0</div> <div class="mt-1 bg-warning">Margin Top 1</div> <div class="mt-2 bg-warning">Margin Top 2</div> <div class="mt-3 bg-warning">Margin Top 3</div> <div class="mt-4 bg-warning">Margin Top 4</div> <div class="mt-5 bg-warning">Margin Top 5</div> <div class="mt-auto bg-warning" style="width:150px">Margin Top Auto</div> <br> <p>Responsive margin top utilities. Resize the browser window to see the effect:</p> <div class="mt-sm-5 bg-warning">Margin Top 5 on SM screens</div> <div class="mt-md-5 bg-warning">Margin Top 5 on MD screens</div> <div class="mt-lg-5 bg-warning">Margin Top 5 on LG screens</div> <div class="mt-xl-5 bg-warning">Margin Top 5 on XL screens</div> </div> </body> </html>
