.btn-whatsapp {padding: 7px !important; font-size: 36px !important;  width: 50px !important;  text-align: center;  text-decoration: none;  background: #a4c639;  color: white;   border-radius: 50%;   position:fixed; 
  bottom: 20px;   float: right;   z-index: 9999;   display: block;   right: 0;  margin-right: 20px}

.videoBgWrapper {position: absolute; top: 0; right: 0; bottom: 0; left: 0; overflow: hidden;}
.videoBg{position: absolute; top: 0; left: 0; width: 100%; height: 100%;}

.alert_message {position: fixed; width: 350px; bottom: 40px; left: 0; z-index: 100}

@media (min-aspect-ratio: 16/9) {
  .videoBg{width: 100%; height: auto;  }
}

@media (max-aspect-ratio: 16/9) {
  .videoBg {width: auto; height: 100%; }
  .logo {width: 220px; height: auto; border: 0}
}