废话不多说，直接上源码
html
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>ZXW-NUDT: 动态炫彩渐变背景</title>
<style>
body, html {
height: 100%;
margin: 0;
}
.gradient-background {
/* 设置渐变背景 */
background: linear-gradient(-45deg, #ee7752, #e73c7e, #23a6d5, #23d5ab);
/* 使背景全屏 */
height: 100%;
/* 添加背景渐变动画 */
animation: gradientBG 15s ease infinite;
background-size: 300% 300%;
}
/* 定义背景渐变动画 */
@keyframes gradientBG {
0% {
background-position: 0% 50%;
}
50% {
background-position: 100% 50%;
}
100% {
background-position: 0% 50%;
}
}
</style>
</head>
<body>
<div class="gradient-background">
<!-- 内容可以放这里 -->
</div>
</body>
</html>