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<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <title>CSS border Animation</title> <link rel="stylesheet" type="text/css" href="style.css"> </head> <body> <div class="box"> <h2>Html</h2> </div> <div class="box"> <h2 class="big">❤️</h2> </div> <div class="box"> <h2>CSS</h2> </div> </body> </html>
@import url('https://fonts.googleapis.com/css?family=Poppins:200,300,400,500,600,700,800,900&display=swap');
*
{
margin: 0;
padding: 0;
box-sizing: border-box;
font-family: 'Poppins', sans-serif;
}
@property --a {
syntax: '<angle>';
inherits: false;
initial-value: 0deg;
}
body
{
display: flex;
justify-content: center;
align-items: center;
min-height: 100vh;
background: #25252b;
gap: 100px;
flex-wrap: wrap;
}
.box
{
position: relative;
width: 300px;
height: 300px;
background: repeating-conic-gradient(from var(--a),#ff2770 0%,#ff2770 5%, transparent 5%,transparent 40%, #ff2770 50%);
animation: rotating 2s linear infinite;
animation-play-state: paused;
border-radius: 20px;
filter: drop-shadow(0 15px 50px #000);
display: flex;
justify-content: center;
align-items: center;
}
.box:nth-child(1)
{
filter: drop-shadow(0 15px 50px #000) hue-rotate(225deg);
}
.box:nth-child(3)
{
filter: drop-shadow(0 15px 50px #000) hue-rotate(310deg);
}
@keyframes rotating
{
0%
{
--a: 0deg;
}
100%
{
--a: 360deg;
}
}
.box::before
{
content: '';
position: absolute;
width: 100%;
height: 100%;
background: repeating-conic-gradient(from var(--a),#45f3ff 0%,#45f3ff 5%, transparent 5%,transparent 40%, #45f3ff 50%);
animation: rotating 2s linear infinite;
animation-play-state: paused;
border-radius: 20px;
animation-delay: -0.5s;
}
.box:hover,
.box:hover::before
{
animation-play-state: running;
}
.box::after
{
content: '';
position: absolute;
inset: 6px;
border: 8px solid #25252b;
border-radius: 15px;
background: #2d2d39;
}
h2
{
position: absolute;
inset: 40px;
display: flex;
justify-content: center;
align-items: center;
border-radius: 10px;
background: rgba(0,0,0,0.2);
z-index: 100;
color: #fff;
font-size: 2.5em;
font-weight: 500;
text-transform: uppercase;
box-shadow: inset 0 10px 20px rgba(0,0,0,0.5);
border-bottom: 2px solid rgba(255,255,255,0.15);
}
.big
{
font-size: 5em;
}
