效果
代码
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<style>
body{
display: flex;
justify-content: center;
align-items: center;
font-size: 30px;
height: 100vh;
color: #fff;
background-image: linear-gradient(
125deg,#2c3e50,#27ae60,#2980b9,#e74c3c,#8e44ad
);
background-size: 400%;
animation: move 20s infinite;
}
@keyframes move{
0%{
background-position: 0% 50%;
}
50%{
background-position: 100% 50%;
}
100%{
background-position: 0% 50%;
}
}
</style>
</head>
<body>
<h1>background</h1>
</body>
</html>