<div class="container">
  <span class="circle">
    <i class="fa fa-arrow-down"></i>
  </span>
  <span class="pulse"></span>
</div>

* {
  box-sizing: border-box;
}
.container {
  height: 120px;
  width: 120px;
  margin: 250px auto 0;
  position: relative;
}
.circle {
  background-color:#fff;
  height: 120px;
  width: 120px;
  display: block;
  border: 5px solid #00baff;
  border-radius: 100px;
  position: absolute;
  bottom: 0;
  z-index: 1;
  animation-name:circle;
  animation-duration:1s;
  animation-timing-function:linear;
  animation-delay:0s;
  animation-iteration-count:infinite;
  animation-direction:normal;
  animation-play-state:running;
  -webkit-animation-name:circle;
  -webkit-animation-duration:1s;
  -webkit-animation-timing-function:linear;
  -webkit-animation-delay:0s;
  -webkit-animation-iteration-count:infinite;
  -webkit-animation-direction:normal;
  -webkit-animation-play-state:running;
}
.fa {
  font-size: 42px;
  color: #00baff;
  bottom: 27px;
  position: absolute;
  left: 50%;
  margin-left: -18px;
  animation-name:arrow;
  animation-duration:1s;
  animation-timing-function:linear;
  animation-delay:0s;
  animation-iteration-count:infinite;
  animation-direction:normal;
  animation-play-state:running;
  -webkit-animation-name:arrow;
  -webkit-animation-duration:1s;
  -webkit-animation-timing-function:linear;
  -webkit-animation-delay:0s;
  -webkit-animation-iteration-count:infinite;
  -webkit-animation-direction:normal;
  -webkit-animation-play-state:running;
}
.pulse {
  margin: 0 auto;
  border-radius: 100px;
  position: absolute;
  left: 5px;
  top: 5px;
  z-index: 0;
  background-color: transparent;
  opacity: 0;
  width: 110px;
  height: 110px;
  border: 10px solid #00baff;
  -webkit-border-radius: 100px;
  -moz-border-radius: 100px;
  -o-border-radius: 100px;
  -ms-border-radius: 100px;
  border-radius: 100px;
  /* Giving Animation Function */
  -webkit-animation: pulse 1s linear infinite 0.3s;
  -moz-animation: pulse 1s linear infinite 0.3s; 
  border-image: initial;
}
@keyframes arrow
  {
  0%   {bottom:0;}
  75% {bottom:90px;}
  100% {bottom:0;}
  }
@-webkit-keyframes arrow
  {
  0%   {bottom:0;}
  75% {bottom:90px;}
  100% {bottom:0;}
  }
@keyframes circle
  {
  0%   {height:120px;}
  10% {height: 120px;}
  50% {height: 130px;}
  75% {height: 150px;}
  90% {height: 130px;}
  100% {height: 120px;}
  }
@-webkit-keyframes circle
  {
  0%   {height:120px;}
  10% {height: 120px;}
  50% {height: 130px;}
  75% {height: 150px;}
  90% {height: 130px;}
  100% {height: 120px;}
  }
@-webkit-keyframes pulse {       
  0% {-webkit-transform: scale(0); opacity: 0;}
  8% {-webkit-transform: scale(0); opacity: 0;}
  15% {-webkit-transform: scale(0.1); opacity: 1;}
  30% {-webkit-transform: scale(0.5); opacity: 1;}
  100% {opacity: 0; -webkit-transform: scale(1.5);}
}
@-moz-keyframes pulse {       
  0% {-webkit-transform: scale(0); opacity: 0;}
  8% {-webkit-transform: scale(0); opacity: 0;}
  15% {-webkit-transform: scale(0.1); opacity: 1;}
  30% {-webkit-transform: scale(0.5); opacity: 1;}
  100% {opacity: 0; -webkit-transform: scale(1.5);}
}