用css实现的一个发光点，还挺好看的。
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title></title>
</head>
<body>
<div class="pulse-icon">
</div>
</body>
<style type="text/css">
.pulse-icon {
display: inline-block;
width: 15px;
height: 15px;
border-radius: 100%;
background-color: #2f8;
position: relative;
box-shadow: 1px 1px 8px 0 rgba(0, 0, 0, 0.75);
}
.pulse-icon:after {
content: "";
box-shadow: 0 0 6px 2px #2f8;
animation: pulsate 1s ease-out;
animation-iteration-count: infinite;
animation-delay: 1.1s;
-webkit-border-radius: 100%;
border-radius: 100%;
height: 300%;
width: 300%;
animation: pulsate 2s infinite;
position: absolute;
margin: -100% 0 0 -100%;
}
@keyframes pulsate {
0% {
transform: scale(0.1, 0.1);
opacity: 0;
-ms-filter: "progid:DXImageTransform.Microsoft.Alpha(Opacity=0)";
filter: alpha(opacity=0);
}
50% {
opacity: 1;
-ms-filter: none;
filter: none;
}
100% {
transform: scale(1.2, 1.2);
opacity: 0;
-ms-filter: "progid:DXImageTransform.Microsoft.Alpha(Opacity=0)";
filter: alpha(opacity=0);
}
}
</style>
</html>
