Create a constant pulse animation - html

Question

I'm trying to create a sun with a pulsing animation. However, I'm having trouble with the intervals of the pulse. Two pulses should always be moving with the transition. Also the sun shouldn't be standing without a pulse.
.pulse {
margin: 100px;
display: block;
width: 85px;
height: 85px;
border-radius: 50%;
background: #cca92c;
cursor: pointer;
box-shadow: 0 0 0 rgba(204, 169, 44, 0.4);
animation: pulse 2s infinite;
position: relative;
}
.pulse::before {
content: '';
box-shadow: 0 0 0 rgba(204, 169, 44, 0.4);
animation: pulse2 2.5s infinite;
border-radius: 50%;
width: 85px;
height: 85px;
border-radius: 50%;
display: block;
position: absolute;
left: 0;
right: 0;
top: 0;
bottom: 0;
margin: auto;
}
.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 40px 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);
}
}
#-webkit-keyframes pulse2 {
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 pulse2 {
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 60px 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);
}
}
<div class="nb-infosys-sun">
<span class="pulse"></span>
</div>

Answer 1

This is what I got after adding animation-delay:
.pulse::before {
content: '';
box-shadow: 0 0 0 rgba(204, 169, 44, 0.4);
animation: pulse2 1s infinite;
animation-delay: 0.5s;
border-radius: 50%;
width: 85px;
height: 85px;
border-radius: 50%;
display: block;
position: absolute;
left: 0;
right: 0;
top: 0;
bottom: 0;
margin: auto;
}
Here is the JSFiddle demo

Answer 2

You can add some animation delay to adjust timing of both pulse as below snippet
.pulse {
margin: 100px;
display: block;
width: 85px;
height: 85px;
border-radius: 50%;
background: #cca92c;
cursor: pointer;
box-shadow: 0 0 0 rgba(204, 169, 44, 0.4);
animation: pulse 2s linear infinite both;
position: relative;
}
.pulse::before {
content: '';
box-shadow: 0 0 0 rgba(204, 169, 44, 0.4);
animation: pulse2 2s linear 1s infinite both;
border-radius: 50%;
width: 85px;
height: 85px;
border-radius: 50%;
display: block;
position: absolute;
left: 0;
right: 0;
top: 0;
bottom: 0;
margin: auto;
}
.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 40px 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);
}
}
#-webkit-keyframes pulse2 {
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 pulse2 {
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 60px 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);
}
}
<div class="nb-infosys-sun">
<span class="pulse"></span>
</div>

Answer 3

index.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Pulse Animation CSS</title>
<link rel="stylesheet" href="style.css">
</head>
<body>
<div class="center">
<div class="pulse">code_snail</div>
</div>
</body>
</html>
style.css
body {
margin: 0;
padding: 0;
background: #262626;
}
.center {
position: absolute;
top: 50%;
left: 50%;
transform: translate(-50%, -50%);
}
.pulse {
width: 150px;
height: 150px;
background: rgb(255, 0, 64);
border-radius: 50%;
color: #fff;
font-size: 20px;
text-align: center;
line-height: 150px;
font-family: Verdana, Geneva, Tahoma, sans-serif;
animation: animate 2s linear infinite;
}
#keyframes animate {
0% {
box-shadow: 0 0 0 0 rgba(255, 0, 64, 0.7), 0 0 0 0 rgba(255, 0, 64, 0.7);
}
40% {
box-shadow: 0 0 0 50px rgba(255, 0, 64, 0), 0 0 0 0 rgba(255, 0, 64, 0.7);
}
80% {
box-shadow: 0 0 0 50px rgba(255, 0, 64, 0), 0 0 0 30px rgba(255, 0, 64, 0);
}
100% {
box-shadow: 0 0 0 0 rgba(255, 0, 64, 0), 0 0 0 30px rgba(255, 0, 64, 0);
}
}
Output
codesnail.com