Concrete 5

<style>.embed-container { position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden; max-width: 100%; } .embed-container iframe, .embed-container object, .embed-container embed { position: absolute; top: 0; left: 0; width: 100%; height: 100%; }</style><div class='embed-container'><iframe width='1280' height='720' src='https://www.youtube.com/embed/bqUijyQZqDw?rel=0' frameborder='0' allowfullscreen></iframe></div>

<style>.embed-container { position: relative; padding-bottom: 56.25%; height: 0; overflow: hidden; max-width: 100%; } .embed-container iframe, .embed-container object, .embed-container embed { position: absolute; top: 0; left: 0; width: 100%; height: 100%; }</style><div class='embed-container'><iframe width='1280' height='720' src='https://www.youtube.com/embed/0mbc3NvidB4?rel=0' frameborder='0' allowfullscreen></iframe></div>