<pre class="source-code"><div><!DOCTYPE html> <html> <head> <meta aname="viewport" content="width=device-width, initial-scale=1"> <style> .container { position: relative; width: 100%; overflow: hidden; padding-top: 56.25%; /* 16:9 Aspect Ratio */ } .responsive-iframe { position: absolute; top: 0; left: 0; bottom: 0; right: 0; width: 100%; height: 100%; border: none; } </style> </head> <body> <div class="container"> <iframe class="responsive-iframe" src="https://drive.google.com/file/d/1bQkz5U1311ymWM8Ep3zxEm4hHf4_N5-t/preview"></iframe> </div> </body> </html> </div></pre>