
<html>
<head>
<meta charset="utf-8">
<meta data-n-head="1" name="viewport" content="width=device-width, initial-scale=1">
<style type="text/css">
body {
display: flex;
align-items: center;
justify-content: center;
min-height: 100vh;
background-color: #1f3244;
}
.container {
width: 400px;
height: 400px;
}
.pulse {
background-color: coral;
height: 200px;
width: 200px;
border-radius: 100%;
position: relative;
}
.ring {
position: absolute;
background-color: inherit;
height: 100%;
width: 100%;
border-radius: 100%;
opacity: 0.8;
animation: pulsing 2s ease-out infinite;
}
.ring:nth-of-type(1) {
animation-delay: -0.5s;
}
.ring:nth-of-type(2) {
animation-delay: -1s;
}
.ring:nth-of-type(3) {
animation-delay: -1.5s;
}
@keyframes pulsing {
100% {
transform: scale(1.75);
opacity: 0;
}
}
</style>
</head>
<body>
<div class="container">
<div class="pulse">
<div class="ring"></div>
<div class="ring"></div>
<div class="ring"></div>
<div class="ring"></div>
</div>
</div>
</body>
</html>