Code Playground

<!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>Document</title>
</head>
<body>
    <div class="card">
  <div class="cardglow"></div>
  <div class="cardborder"></div>
  <div class="cardbg"></div>
  <div class="logo"></div>
  <div class="numbers">1234 5678 9012 3456</div>
  <div class="visalogo"></div>
</div>
<svg height="0" width="0">
	<defs>
		<clipPath id="svgPath" clipPathUnits="objectBoundingBox"
   transform="scale(0.001 0.001)">
			<path d="m651.19.5c-70.93,0-134.32,36.77-134.32,104.69,0,77.9,112.42,83.28,112.42,122.42,0,16.48-18.88,31.23-51.14,31.23-45.77,0-79.98-20.61-79.98-20.61l-14.64,68.55s39.41,17.41,91.73,17.41c77.55,0,138.58-38.57,138.58-107.66,0-82.32-112.89-87.54-112.89-123.86,0-12.91,15.5-27.05,47.66-27.05,36.29,0,65.89,14.99,65.89,14.99l14.33-66.2S696.61.5,651.18.5h0ZM2.22,5.5L.5,15.49s29.84,5.46,56.72,16.36c34.61,12.49,37.07,19.77,42.9,42.35l63.51,244.83h85.14L379.93,5.5h-84.94l-84.28,213.17-34.39-180.7c-3.15-20.68-19.13-32.48-38.68-32.48,0,0-135.41,0-135.41,0Zm411.87,0l-66.63,313.53h81L494.85,5.5h-80.76Zm451.76,0c-19.53,0-29.88,10.46-37.47,28.73l-118.67,284.8h84.94l16.43-47.47h103.48l9.99,47.47h74.95L934.12,5.5h-68.27Zm11.05,84.71l25.18,117.65h-67.45l42.28-117.65h0Z"/>
		</clipPath>
	</defs>
</svg>
</body>
</html>

@charset "UTF-8";
@import url(https://fonts.googleapis.com/css?family=Nunito+Sans:300,400,600,700,800);
*,
:after,
:before {
  box-sizing: border-box;
  padding: 0;
  margin: 0;
}
@import url('https://fonts.cdnfonts.com/css/credit-card');

:root {
  font-family: "Credit Card"
}

*, *:before, *:after {
  -webkit-box-sizing: border-box;
  -moz-box-sizing: border-box;
  box-sizing: border-box;
}

body {
  margin: 0;
  height: 100vh;
  width: 100%;
  background: #0c0c0c;
  overflow: hidden;
  display: grid;
  place-content: center;
}

@property --anim {
  syntax: "<number>";
  inherits: true;
  initial-value: 0;
}

.card {
  --anim: 0;
  --radius: 0.75rem;
  width: 20rem;
  height: 12rem;
  border-radius: var(--radius);
  position: relative;
  display: grid;
  transition: --anim 300ms ease
}
.card:hover {
  --anim: 1;
}
.cardglow, .cardbg, .cardborder, .numbers {
  grid-area: 1/1/2/2; 
}
.cardglow, .cardborder, .numbers {
  background: conic-gradient(#ff3b3b,
	#ffa801,
	#ffeb3b,
	#6cff3b,
	#0fbcf9,
  #5d62fb,
	#eb3bff,
  #ff3b3b);
}

.cardglow {
  border-radius: 0.25rem;
  filter: blur(calc(0.375rem + var(--anim) * 0.25rem)) hue-rotate(calc(20deg * var(--anim)));
}
.cardborder {
  border-radius: var(--radius);
  filter: hue-rotate(calc(20deg * var(--anim)));
}
.cardbg {
  margin: 0.125rem;
  border-radius: calc(var(--radius) - 0.125rem);
  background: none;
  backdrop-filter: contrast(50%) brightness(15%) blur(1.25rem);
  box-shadow: inset rgba(0,0,0,0.5) 0 0 0.625rem;
  display: grid;
}

.logo {
  position: absolute;
  width: 3rem;
  height: 2.5rem;
  margin: 1.25rem;
  clip-path: polygon(25% 0%, 75% 0%, 100% 25%, 50% 100%, 0% 25%);
  backdrop-filter: brightness(666%) contrast(200%);
}
.numbers {
  background-clip: text;
  z-index: 20;
  color: transparent;
  text-align: center;
  padding-top: 37%;
  font-size: 1.125rem;
  filter: hue-rotate(calc(20deg * var(--anim)));
}

.visalogo {
  position: absolute;
  bottom: -2.75rem;
  right: 0;
  width: 4rem;
  height: 4rem;
  margin: 1.25rem;
  backdrop-filter: brightness(666%) contrast(200%);
  clip-path: url(#svgPath)
}

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