效果：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<style>
body{
margin: 0;
padding: 0;
background: #34495e;
height: 100vh;
display: flex;
align-items: center;
justify-content: center;
font-family: "monospace",sans-serif;
}
.loading{
width: 200px;
height: 200px;
box-sizing: border-box;
border-radius: 50%;
border-top: 10px solid #e74c3c;
position: relative;
animation: a1 2s linear infinite;
}
.loading::before,.loading::after{
content: '';
width: 200px;
height: 200px;
position: absolute;
left: 0;
top: -10px;
box-sizing: border-box;
border-radius: 50%;
}
.loading::before{
border-top:10px solid #e67e22;
transform: rotate(120deg);
}
.loading::after{
border-top:10px solid #3498bd;
transform: rotate(240deg);
}
.loading span{
position: absolute;
width: 200px;
height: 200px;
color: #fff;
text-align: center;
line-height: 200px;
animation: a2 2s linear infinite;
}
@keyframes a1 {
to{
transform:rotate(360deg);
}
}
@keyframes a2 {
to{
transform: rotate(-360deg);
}
}
</style>
<script>
/**
*
旋轉的div
animation:mymove 1s linear infinite ;
}
@keyframes mymove
{
from {top:0px;}
to {transform:rotate(360deg);}
}
*/
</script>
</head>
<body>
<div class="loading"><span>Loading....</span></div>
</body>
</html>