How can I make the YouTube player scale to the width of the page but also keep the aspect ratio?

Question

I have a YouTube video I want to put on my web page.

I want to scale the video to fit to a percent of the users browser but also to keep the aspect ratio.

I hav

Answer 1

Just set iframe height and width with CSS vw metric. It uses device width as parameter:

.videoWrapper iframe {
    height: 36.6vw;
    width: 65vw; 
}