<!DOCTYPE html> <html> <head> <title><iframe width="560" height="315" src="https://www.youtube.com/embed/W8uj1J8UWjY" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe></title> </head> <body> <h1>https://www.youtube.com/watch?v=W8uj1J8UWjY</h1> <iframe width="560" height="315" src="https://www.youtube.com/embed/W8uj1J8UWjY" frameborder="0" allow="accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe> </body> </html>
jsfiddle.netで開いてください
