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Animated CSS Gradient Border
<div class="gradient-border" id="box">DJ Substance <br>Presents<br> ## mix name ## </div>
@import url('https://fonts.googleapis.com/css?family=Raleway:200');
html, body {
height: 100%;
}
body {
display: flex;
justify-content: center;
align-items: center;
height: 100%;
background: #1D1F20;
}
#box {
display: flex;
align-items: center;
justify-content: center;
width: 400px;
height: 200px;
color: white;
font-family: 'Raleway';
font-size: 2.5rem;
}
.gradient-border {
--borderWidth: 3px;
background: #1D1F20;
position: relative;
border-radius: var(--borderWidth);
}
.gradient-border:after {
content: '';
position: absolute;
top: calc(-1 * var(--borderWidth));
left: calc(-1 * var(--borderWidth));
height: calc(100% + var(--borderWidth) * 2);
width: calc(100% + var(--borderWidth) * 2);
background: linear-gradient(60deg, #f79533, #f37055, #ef4e7b, #a166ab, #5073b8, #1098ad, #07b39b, #6fba82);
border-radius: calc(2 * var(--borderWidth));
z-index: -1;
animation: animatedgradient 3s ease alternate infinite;
background-size: 300% 300%;
}
@keyframes animatedgradient {
0% {
background-position: 0% 50%;
}
50% {
background-position: 100% 50%;
}
100% {
background-position: 0% 50%;
}
}
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