.vb-popup-overlay{
  display:none;
  position:fixed;
  inset:0;
  background:rgba(0,0,0,.7);
  z-index:9999;
}

.vb-popup{
  background:#fff;
  max-width:800px;
  width:90%;
  margin:5% auto;
  padding:20px;
  position:relative;
}

.vb-popup iframe{
  width:100%;
  height:70vh;
}

.vb-popup-close{
  position:absolute;
  top:10px;
  right:10px;
  font-size:26px;
  background:none;
  border:none;
  cursor:pointer;
}