pulsating markers effect with css - interactive geo maps

styles.css

.imapsCircle {
    paint-order: stroke;
    stroke-opacity:1;
    stroke: #dd9933; /* change with the stroke color you want */
    animation: pulse-me 1s linear infinite;
}

@keyframes pulse-me {
  0% {
    stroke-opacity: 0.9;
    stroke-width:0px;
  }
  100% {
    stroke-opacity: 0;
    stroke-width:25px;
  }
}