.radar {
position: absolute;
left: 50%;
top: 50%;
width:300px;
height:300px;
transform: translate(-50%, -50%);
border-radius: 50%;
border: solid 1px #47b27f;
background-image: radial-gradient( circle farthest-corner, rgba(0, 162, 213, 0) 52%, rgb(83, 165, 125) 100%);
transition: all 0.2s ease-out;
-webkit-animation: zoomIn 0.2s ease-in-out 0.2s;
animation: zoomIn 0.2s ease-in-out 0.2s;
-webkit-animation-fill-mode: both;
animation-fill-mode: both;
}
.radar:nth-child(2) {
position: absolute;
left: 50%;
top: 50%;
width:400px;
height:400px;
transform: translate(-50%, -50%);
border-radius: 50%;
border: solid 1px #47b27f;
background-image: radial-gradient( circle farthest-corner, rgba(0, 162, 213, 0) 52%, rgb(83, 165, 125) 100%);
transition: all 0.25s ease-out;
-webkit-animation: zoomIn 0.25s ease-in-out 0.25s;
animation: zoomIn 0.25s ease-in-out 0.25s;
-webkit-animation-fill-mode: both;
animation-fill-mode: both;
}
.radar:nth-child(3) {
position: absolute;
left: 50%;
top: 50%;
width:500px;
height:500px;
transform: translate(-50%, -50%);
border-radius: 50%;
border: solid 1px #47b27f;
background-image: radial-gradient( circle farthest-corner, rgba(0, 162, 213, 0) 52%, rgb(83, 165, 125) 100%);
transition: all 0.3s ease-out;
-webkit-animation: zoomIn 0.3s ease-in-out 0.3s;
animation: zoomIn 0.3s ease-in-out 0.3s;
-webkit-animation-fill-mode: both;
animation-fill-mode: both;
}
.radar:nth-child(4) {
position: absolute;
left: 50%;
top: 50%;
width:600px;
height:600px;
transform: translate(-50%, -50%);
border-radius: 50%;
border: solid 1px #47b27f;
background-image: radial-gradient( circle farthest-corner, rgba(0, 162, 213, 0) 52%, rgb(83, 165, 125) 100%);
transition: all 0.35s ease;
-webkit-animation: zoomIn 0.35s ease 0.35s;
animation: zoomIn 0.35s easet 0.35s;
-webkit-animation-fill-mode: both;
animation-fill-mode: both;
}
.radar:nth-child(5) {
position: absolute;
left: 50%;
top: 50%;
width:700px;
height:700px;
transform: translate(-50%, -50%);
border-radius: 50%;
border: solid 1px #47b27f;
background-image: radial-gradient( circle farthest-corner, rgba(0, 162, 213, 0) 52%, rgb(83, 165, 125) 100%);
transition: all 0.4s ease-out;
-webkit-animation: zoomIn 0.4s ease-in-out 0.4s;
animation: zoomIn 0.4s ease-in-out 0.4s;
-webkit-animation-fill-mode: both;
animation-fill-mode: both;
}
<link href="https://daneden.github.io/animate.css/animate.min.css" rel="stylesheet"/>
<div class="radar"></div>
<div class="radar"></div>
<div class="radar"></div>
<div class="radar"></div>
<div class="radar"></div>