.vis-network .ripple {
    position: absolute;
    background-color: rgba(255, 255, 255, 0.5);
    border-radius: 50%;
    transform: scale(0);
    pointer-events: none;
    z-index: 9999;
    animation: ripple 0.8s linear;
  }
  
  @keyframes ripple {
    to {
      transform: scale(4);
      opacity: 0;
    }
  }