Show Output
<!DOCTYPE html> <html lang="en"> <head> <meta charset="utf-8"> <meta name="viewport" content="width=device-width, initial-scale=1"> <title>Bootstrap Responsive Videos</title> <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.0.2/dist/css/bootstrap.min.css" rel="stylesheet"> <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.0.2/dist/js/bootstrap.bundle.min.js"></script> </head> <body> <div class="m-4"> <div class="alert alert-info alert-dismissible fade show"> <strong>Note!</strong> Open the output in a new blank tab (click the arrow button next to "Show Output") and resize the browser window to see how responsive videos work. <button type="button" class="btn-close" data-bs-dismiss="alert"></button> </div> <h2 class="mt-4">Video with 21:9 aspect ratio</h2> <div class="ratio ratio-21x9"> <iframe src="//www.youtube.com/embed/YE7VzlLtp-4" title="YouTube video" allowfullscreen></iframe> </div> <h2 class="mt-4">Video with 16:9 aspect ratio</h2> <div class="ratio ratio-16x9"> <iframe src="//www.youtube.com/embed/YE7VzlLtp-4" title="YouTube video" allowfullscreen></iframe> </div> <h2 class="mt-4">Video with 4:3 aspect ratio</h2> <div class="ratio ratio-4x3"> <iframe src="//www.youtube.com/embed/YE7VzlLtp-4" title="YouTube video" allowfullscreen></iframe> </div> <h2 class="mt-4">Video with 1:1 aspect ratio</h2> <div class="ratio ratio-1x1"> <iframe src="//www.youtube.com/embed/YE7VzlLtp-4" title="YouTube video" allowfullscreen></iframe> </div> </div> </body> </html>