#mypdf{ width:100%; float:left; min-height:500px; border:1px solid #5694cf;display:block;}




.pulsate::before {
  content: '';
  display: block;
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  animation: pulse 1s ease infinite;
  border-radius: 50%;
  border: 4px double lighten(red, 20%);
}

@keyframes pulse {
  0% {
    transform: scale(1);
    opacity: 1;
  }
  60% {
    transform: scale(1.3);
    opacity: 0.4;
  }
  100% {
    transform: scale(1.4);
    opacity: 0;
  }
}