【第16期】仅使用css的动画花式边框技巧
2023-03-24
html代码：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>仅使用css的动画花式边框技巧</title>
<link rel="stylesheet" href="style.css">
</head>
<body>
<div class="container">
<div class="box" style="--i:1;"></div>
<div class="box" style="--i:2;"></div>
<div class="box" style="--i:3;"></div>
</div>
</body>
</html>
css代码：
*
{
margin:0;
padding:0;
box-sizing: border-box;
}
body
{
display: flex;
justify-content: center;
align-items: center;
min-height: 100vh;
background:#000;
}
.container
{
position: relative;
display: flex;
justify-content: center;
align-items: center;
width: 100%;
gap:100px;
}
.container .box
{
position: relative;
width: 300px;
height: 400px;
background:linear-gradient(45deg,#00fe76 10%,
transparent 10%,transparent 50%,
#00f376 50%,#00f376 60%,
transparent 60%,transparent 100%);
background-size: 15px 15px;
box-shadow: 0 0 0 10px #000,0 0 0 14px #00f376;
filter:hue-rotate(calc(var(--i) * 90deg));
animation:animate 0.5s linear infinite;
}
.container .box::before
{
content:'';
position:absolute;
inset:20px;
background:#000;
}
.container .box::after
{
content:'';
position:absolute;
inset:30px;
border:3px dashed #00f376;
}
@keyframes animate
{
0%
{
background-position:0;
}
100%
{
background-position: 15px;
}
}
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