body .pulse {
  position: fixed;
  border: 2px;
  background: rgb(25, 204, 25);
  width: 70px;
  height: 70px;
  border-radius: 50%;
  font-size: 36px;
  bottom: 90px;
  z-index: 9999;
  right: 30px;
  color: white;
  display: -webkit-box;
  display: -ms-flexbox;
  display: flex;
  -webkit-box-pack: center;
      -ms-flex-pack: center;
          justify-content: center;
  -webkit-box-align: center;
      -ms-flex-align: center;
          align-items: center;
}

body .pulse::before {
  position: absolute;
  content: '';
  width: 90%;
  height: 90%;
  border: 2px solid rgb(25, 204, 25);
  border-radius: 50%;
  -webkit-animation: animate 2s linear infinite;
          animation: animate 2s linear infinite;
  -webkit-animation-delay: 0s;
          animation-delay: 0s;
}

body .pulse::after {
  position: absolute;
  content: '';
  width: 90%;
  height: 90%;
  border: 2px solid rgb(25, 204, 25);
  border-radius: 50%;
  -webkit-animation: animate 2s linear infinite;
          animation: animate 2s linear infinite;
  -webkit-animation-delay: .5s;
          animation-delay: .5s;
}

body .pulse .fa-phone {
  position: absolute;
}

@-webkit-keyframes animate {
  0% {
    -webkit-transform: scale(1);
            transform: scale(1);
  }
  100% {
    -webkit-transform: scale(2);
            transform: scale(2);
    opacity: 0;
  }
}

@keyframes animate {
  0% {
    -webkit-transform: scale(1);
            transform: scale(1);
  }
  100% {
    -webkit-transform: scale(2);
            transform: scale(2);
    opacity: 0;
  }
}