【demo】css实现流光按钮_demo按钮发光效果-优快云博客

本文链接：https://blog.youkuaiyun.com/qq_42347235/article/details/106244089

index.html

<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>流光按钮</title>
  <link rel="stylesheet" href="../css/index.css">
</head>
<body>
  <a href="javascript:;">流光按钮</a>
</body>
</html>

index.css

*{
  margin:0;
  padding: 0;
}
body{
  background: #000; 
}
a{
  text-decoration: none;
  position:absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%,-50%);
  /* 上面这句不懂 */
  font-size: 24px;
  background: linear-gradient(90deg,blue,purple,red,yellow,blue);
  background-size: 400%;
  width: 400px;
  height: 100px;
  line-height: 100px;
  text-align: center;
  color: white;
  border-radius: 50px;
}

a::before{
  content: "";
  position: absolute;
  left: -5px;
  right: -5px;
  top: -5px;
  bottom: -5px;
  background: linear-gradient(90deg,blue,purple,red,yellow,blue);
  background-size: 400%;
  border-radius: 50px;
  filter: blur(20px);
  z-index: -1;
}

a:hover::before{
  animation: flow 8s infinite;

}
a:hover{
  animation: flow 8s infinite;
  z-index: 1;
}

@keyframes flow{
  100%{
    background-position: -400% 0;

  }
}