.youtube_player { 
overflow:hidden; 
padding-bottom:56.25%; 
position:relative; 
height:0;
width: 100% !important;
background-color:#333;
}

.youtube_player iframe {
max-width:100%;
width:100%;
height:100%;
left:0; 
top:0; 
position:absolute;
}

/*.youtube_player iframe {
  aspect-ratio: 16 / 9;
  width: 100%;
  max-height: 100%;
}*/

.tac_activate_youtube { height:200%; }