CSS3实现霓虹灯背景的卡片，先看效果图：
整体代码如下：
<!DOCTYPE html>
<html >
<head>
<meta charset="UTF-8">
<title>CSS3实现霓虹灯背景的卡片 - 我爱模板网</title>
<style type="text/css">
@property --rotate {
syntax: "<angle>";
initial-value: 132deg;
inherits: false;
}
:root {
--card-height: 65vh;
--card-width: calc(var(--card-height) / 1.5);
}
body {
min-height: 100vh;
background: #212534;
display: flex;
align-items: center;
flex-direction: column;
padding-top: 2rem;
padding-bottom: 2rem;
box-sizing: border-box;
}
.card {
background: #191c29;
width: var(--card-width);
height: var(--card-height);
padding: 3px;
position: relative;
border-radius: 6px;
justify-content: center;
align-items: center;
text-align: center;
display: flex;
font-size: 1.5em;
color: rgb(88 199 250 / 0%);
cursor: pointer;
font-family: cursive;
}
.card:hover {
color: rgb(88 199 250 / 100%);
transition: color 1s;
}
.card:hover:before, .card:hover:after {
animation: none;
opacity: 0;
}
.card::before {
content: "";
width: 104%;
height: 102%;
border-radius: 8px;
background-image: linear-gradient(
var(--rotate)
, #5ddcff, #3c67e3 43%, #4e00c2);
position: absolute;
z-index: -1;
top: -1%;
left: -2%;
animation: spin 2.5s linear infinite;
}
.card::after {
position: absolute;
content: "";
top: calc(var(--card-height) / 6);
left: 0;
right: 0;
z-index: -1;
height: 100%;
width: 100%;
margin: 0 auto;
transform: scale(0.8);
filter: blur(calc(var(--card-height) / 6));
background-image: linear-gradient(
var(--rotate)
, #5ddcff, #3c67e3 43%, #4e00c2);
opacity: 1;
transition: opacity .5s;
animation: spin 2.5s linear infinite;
}
@keyframes spin {
0% {
--rotate: 0deg;
}
100% {
--rotate: 360deg;
}
}
a {
color: #212534;
text-decoration: none;
font-family: sans-serif;
font-weight: bold;
margin-top: 2rem;
}
</style>
</head>
<body>
<!-- partial:index.partial.html -->
<div>
Magic Card
</div>
</body>
</html>