演示地址：https://xibushijie.github.io/loading/loading.html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
<meta name="viewport" content="width=device-width,initial-scale=1,minimum-scale=1,maximum-scale=1,user-scalable=no" />
<style type="text/css">
/* loading */
.loading {
position: relative;
}
.loading::before {
4px; height: 4px;
margin: auto;
content: '';
-webkit-animation: spinZoom 1s steps(8) infinite;
animation: spinZoom 1s steps(8) infinite;
border-radius: 100%;
box-shadow: 0 -10px 0 1px currentColor, 10px 0 currentColor, 0 10px currentColor, -10px 0 currentColor, -7px -7px 0 .5px currentColor, 7px -7px 0 1.5px currentColor, 7px 7px currentColor, -7px 7px currentColor;
/* center */
position: absolute;
top: 0; right: 0; bottom: 0; left: 0;
}
/* loading动画 */
@-webkit-keyframes spinZoom {
0% {
-webkit-transform: scale(.75) rotate(0);
}
100% {
-webkit-transform: scale(.75) rotate(360deg);
}
}
@keyframes spinZoom {
0% {
transform: scale(.75) rotate(0);
}
100% {
transform: scale(.75) rotate(360deg);
}
}
</style>
</head>
<body>
<a href="" class="btn loading"> </a>
</body>
</html>