纯CSS实现动态流水灯边框效果，点击查看效果
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>纯CSS动态流水灯边框效果</title>
<style>
* {
margin: 0;
padding: 0;
box-sizing: border-box;
}
body {
min-height: 100vh;
background-color: #12CBC4;
display: flex;
justify-content: space-around;
align-items: center;
}
.box1 {
width: 600px;
height: 400px;
line-height: 400px;
background-color: #fff;
border-radius: 5vmin;
color: #66ddf7;
font-size: 5vmin;
position: relative;
overflow: hidden;
text-align: center;
z-index: 1;
}
.box1::before{
content: "";
width: 200%;
height: 200%;
background-color: #22292f;
position: absolute;
left: -50%;
top:-58%;
background-image: conic-gradient(
transparent, #66ddf7, transparent 30%
);
z-index: -2;
animation: rotate 5s linear infinite;
}
.box1::after {
content: "";
position: absolute;
inset: 1vmin;
background-color: #000;
border-radius: 4vmin;
z-index: -1;
}
@keyframes rotate {
to {
transform: rotate(360deg);
}
}
/* 彩虹色 */
.box2 {
width: 600px;
height: 400px;
position: relative;
}
.box2::before {
content: "";
position: absolute;
inset: 0;
background: conic-gradient(
from var(--a), #0f0, #ff0, #0ff, #f0f, #0ff
);
border-radius: 20px;
animation: rotating 5s linear infinite;
}
.box2::after {
content: "";
position: absolute;
inset: 0;
background: conic-gradient(
from var(--a), #0f0, #ff0, #0ff, #f0f, #0ff
);
border-radius: 20px;
animation: rotating 5s linear infinite;
/* filter: blur(40px); */
opacity: 0.75;
}
.box2 span {
position: absolute;
inset: 1vmin;
background: #222;
border-radius: 16px;
z-index: 1;
}
@property --a {
syntax: '<angle>';
inherits: false;
initial-value: 0deg;
}
@keyframes rotating {
0% {
--a: 0deg;
}
100% {
--a: 360deg;
}
}
.box2 .box2 {
position: absolute;
inset: 0 -50px;
top: 100px;
height: 200px;
width: 700px;
}
</style>
</head>
<body>
<div class="box1">流水灯边框</div>
<div class="box2"><span></span>
<div class="box2"><span></span></div>
</div>
</body>
</html>
