The responsive class of bootstrap makes video-players responsive, not videos. Have you tried additionally setting height of the iframe? its aspect ratio). sized thanks to our universal selector .ratio > *. You can copy our examples and paste them into your project! I tried with %177.78 and it didnt work. What does a search warrant actually look like? Why don't we get infinite energy from a continous emission spectrum? Heres an example of the$embed-responsive-aspect-ratioslist: If you are using Materialize CSS, then you dont need your own classes either. ok, one easy quick test would be to change the src attribute on your iframe tag to point to some very simple static page, leaving Tableau server out of the picture. television, and for YouTube videos). The following example creates a responsive video by adding an .embed-responsive-item class to an