<body>
  <div>☆<span class="ring_wave"></span></div>
</body>
body{
    text-align: center;
}
div{
    position: relative;
    display: inline-block;
}
.ring_wave{
    border: 1px solid #56aae8;
    border-radius: 100px;
    height: 30px;
    width: 30px;
    position: absolute;
    top: -4px;
    right: -8px;
    -webkit-animation: ring 6s ease-out;
    animation: ring 6s ease-out;
    -webkit-animation-iteration-count: infinite;
    animation-iteration-count: infinite;
    opacity: 0;
}
@keyframes ring{ 
30% {
    -webkit-transform: scale(.1,.1);
    transform: scale(.1,.1);
    opacity: 0;
}
35% {
    opacity: 1;
}
40% {
    -webkit-transform: scale(1.2,1.2);
    transform: scale(1.2,1.2);
    opacity: 0;
}
}

External CSS

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External JavaScript

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