.node {
  transition: all 0.2s ease;
}

.selected {
  opacity: 1;
}

.dimmed {
  opacity: 0.3;
}

.pulse {
  animation: pulse 1.5s infinite ease-in-out;
}

@keyframes pulse {
  0% {
    opacity: 0.6;
    r: 3;
  }
  50% {
    opacity: 1;
    r: 5;
  }
  100% {
    opacity: 0.6;
    r: 3;
  }
}