Responsive Video or Slideshow Embeds in Bootstrap with Examples Last Updated : 24 Jan, 2019 Comments Improve Suggest changes Like Article Like Report Bootstrap allows creating responsive video or slideshow embeds based on the width of the display or parent element by creating a native ratio that scales with the device. Using responsive video or slideshow embeds the content can be scaled automatically as per the screen size or the parent container element, this makes the UI more responsive. Bootstrap provides a class named embed-responsive for creating responsive embeds. This class is assigned to the parent which encloses any of the following embedding elements: <iframe>, <embed>, <video>, and <object>. Optionally, along with the embed-responsive class, one more class embed-responsive-item can be used with the embedding elements. Bootstrap also provides a few modifier classes to adjust the aspect ratio of the elements: embed-responsive-16by9 embed-responsive-21by9 embed-responsive-1by1 embed-responsive-4by3 Below program illustrate the embed-responsive class: html <!DOCTYPE html> <html> <head> <!-- Link Bootstrap CSS --> <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous"> <title> Responsive Video </title> </head> <body> <div class="embed-responsive embed-responsive-21by9"> <iframe class="embed-responsive-item" src="https://www.youtube.com/embed/HMAwoMt3kek" allowfullscreen> </iframe> </div> </body> </html> Output: Comment More infoAdvertise with us M MayankKhare Follow Improve Article Tags : Web Technologies Bootstrap Similar Reads Bootstrap Cards A card is a flexible and extensible content container. 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