.video-container {

  position: relative; 
  padding-bottom: 56.25%; 
  height: 0; 
  overflow: hidden; 
  max-width: 100%;
}

.video-container iframe {
  padding-top: 15px;
  padding-bottom: 15px; 

 
  position: absolute; 
  top: 0; 
  left: 0; 
  width: 100%; 
  height: 100%;
}

