Responsive YouTube and Vimeo video code

Code for creating Responsive YouTube and Vimeo video. Use the following css and html.

body{ margin:0; padding:0;}
.embed-container { position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden; max-width: 100%; height: auto; }
.embed-container iframe, .embed-container object, .embed-container embed { position: absolute; top: 0; left: 0; width: 100%; height: 100%; }

<div class='embed-container'><iframe src='https://player.vimeo.com/video/173652088' frameborder='0' webkitAllowFullScreen mozallowfullscreen allowFullScreen></iframe></div>