.embed-video-container {

position: relative;
padding-bottom: 56.25%; /* 16/9 ratio */
padding-top: 30px; /* IE6 workaround*/
height: 0;
overflow: hidden;
margin-bottom: 1.5em;

iframe, object, embed {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

}