---body {
 margin: 0;
 display: flex;
 align-items: center;
 justify-content: center;
 height: 100vh;
 background-color: #fff;
}

.pulse {
  width: 60px;
  height: 60px;
  background-color: #747d66;
  color: #727D64;
  border-radius: 50%;
  text-align: center;
  line-height: 100px;
  font-size: 48px;
  position: relative;
}

.pulse:before, .pulse:after {
  content: '';
  position: absolute;
  left: -20px;
  right: -20px;
  top: -20px;
  bottom: -20px;
  border: 1px solid #fff;
  border-radius: 50%;
  animation: pulse 1.5s linear infinite;
}

.pulse:after {
  animation-delay: 0.5s;
}

@keyframes pulse {
  0% { transform: scale(0.5); opacity: 0 }
  50% { transform: scale(1); opacity: 1 }
  100% { transform: scale(1.2); opacity: 0 }
}