给大家分享一个用CSS 3.0实现加载动画，效果如下：
以下是代码实现，欢迎大家复制、粘贴和收藏。
代码语言：javascript复制<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>CSS 3.0实现加载动画</title>
<style>
* {
margin: 0;
padding: 0;
box-sizing: border-box;
}
section {
display: flex;
align-items: center;
justify-content: center;
min-height: 100vh;
background: #042104;
animation: animateBackground 10s linear infinite;
}
@keyframes animateBackground {
0% {
filter: hue-rotate(0deg);
}
100% {
filter: hue-rotate(360deg);
}
}
section .loader {
position: relative;
width: 120px;
height: 120px;
}
section .loader span {
position: absolute;
top: 0;
left: 0;
width: 100%;
height: 100%;
transform: rotate(calc(18deg * var(--i)));
}
section .loader span::before {
content: '';
position: absolute;
top: 0;
left: 0;
width: 15px;
height: 15px;
background: #00ff0a;
border-radius: 50%;
box-shadow: 0 0 10px #00ff0a,
0 0 20px #00ff0a,
0 0 40px #00ff0a,
0 0 80px #00ff0a,
0 0 100px #00ff0a;
animation: animate 2s linear infinite;
animation-delay: calc(0.1s * var(--i));
}
@keyframes animate {
0% {
transform: scale(1);
}
80%,100% {
transform: scale(0);
}
}
</style>
</head>
<body>
<section>
<div class="loader">
<span style="--i:1"></span>
<span style="--i:2;"></span>
<span style="--i:3;"></span>
<span style="--i:4;"></span>
<span style="--i:5;"></span>
<span style="--i:6;"></span>
<span style="--i:7;"></span>
<span style="--i:8;"></span>
<span style="--i:9;"></span>
<span style="--i:10;"></span>
<span style="--i:11;"></span>
<span style="--i:12;"></span>
<span style="--i:13;"></span>
<span style="--i:14;"></span>
<span style="--i:15;"></span>
<span style="--i:16;"></span>
<span style="--i:17;"></span>
<span style="--i:18;"></span>
<span style="--i:19;"></span>
<span style="--i:20;"></span>
</div>
</section>
</body>
</html>
