HTML Code
<span class="pulse"></span>
CSS Code
.pulse {
margin:100px;
display: block;
width: 22px;
height: 22px;
border-radius: 50%;
background: #cca92c;
cursor: pointer;
box-shadow: 0 0 0 rgba(204,169,44, 0.4);
animation: pulse 2s infinite;
}
.pulse:hover {
animation: none;
}
@-webkit-keyframes pulse {
0% {
-webkit-box-shadow: 0 0 0 0 rgba(204,169,44, 0.4);
}
70% {
-webkit-box-shadow: 0 0 0 10px rgba(204,169,44, 0);
}
100% {
-webkit-box-shadow: 0 0 0 0 rgba(204,169,44, 0);
}
}
@keyframes pulse {
0% {
-moz-box-shadow: 0 0 0 0 rgba(204,169,44, 0.4);
box-shadow: 0 0 0 0 rgba(204,169,44, 0.4);
}
70% {
-moz-box-shadow: 0 0 0 10px rgba(204,169,44, 0);
box-shadow: 0 0 0 10px rgba(204,169,44, 0);
}
100% {
-moz-box-shadow: 0 0 0 0 rgba(204,169,44, 0);
box-shadow: 0 0 0 0 rgba(204,169,44, 0);
}
}
Codepan Link
https://codepen.io/anon/pen/xBvKww
Hope it helps