pulse.scss

$red: #c0392b;
$green: #27ae60;
$yellow: #f1c40f;

.status-pulse {
  position: relative;
  width: 10px;
  height: 10px;

  &:hover {
    cursor: pointer;
  }
}

.pulse {
  width: 10px;
  height: 10px;
  border-radius: 30px;
  position: absolute;

  &.red {
    background-color: $red;
  }

  &.green {
    background-color: $green;
  }

  &.yellow {
    background-color: $yellow;
  }
}

.dot {
  background: transparent;
  border-radius: 60px;
  height: 20px;
  width: 20px;
  position: absolute;
  top: -10px;
  left: -10px;
  opacity: 0;
  border-width: 5px;
  border-style: solid;

  &.red {
    border-color: $red;
    animation: pulse 2s ease-out;
    animation-iteration-count: infinite;
  }

  &.green {
    border: 10px solid $green;
  }

  &.yellow {
    border: 10px solid $yellow;
  }
}

@keyframes pulse {
 0% {
    transform: scale(0);
    opacity: 0.0;
 }
 10% {
    transform: scale(0.1);
    opacity: 0.1;
 }
 20% {
    transform: scale(0.2);
    opacity: 0.2;
 }
 30% {
    transform: scale(0.3);
    opacity: 0.3;
 }
 40% {
    transform: scale(0.4);
    opacity: 0.4;
 }
 50% {
    transform: scale(0.5);
    opacity: 0.5;
 }
 60% {
    transform: scale(0.6);
    opacity: 0.6;
 }
 70% {
    transform: scale(0.75);
    opacity: 0.5;
 }
 80% {
    transform: scale(0.8);
    opacity: 0.4;
 }
 90% {
    transform: scale(0.85);
    opacity: 0.2;
 }
 100% {
    transform: scale(0.9);
    opacity: 0.0;
 }
}