#bg-yt-wrapper{
  display:none;
  position: absolute; 
  z-index: -99; 
  width: 100%; 
  height: 100%;
}

#bg-yt-wrapper::after{
  content:"";
  position: absolute;
  top:0;
  right:0;
  bottom:0;
  left:0;
  background-color: rgba(0,0,0,0.2);
}