Cuenta atrás SVG con CSS 2i114k

Herramientas SEO Tamaño del resultado: 668 x 574

<!doctype html>
<html lang="es">
<head>
<meta charset="utf-8">
<title>Cuenta atrás SVG con CSS</title>
</head>
<body>

<style>
*, *:before, *:after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
body {
  background: #32386d;
  font-family: Helvetica, Arial, sans-serif;
}
.demo {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 800px;
  height: 140px;
  margin-top: -70px;
  padding: 10px;
  border-radius: 20px;
  transform: translateX(-50%);
}
.demo__colored-blocks {
  overflow: hidden;
  position: absolute;
  left: 50%;
  top: 0;
  width: 800px;
  height: 100%;
  margin-left: -400px;
  padding: 10px;
  border-radius: 20px;
  perspective: 1000px;
  animation: demoAnim 4s ease-in-out infinite, contAnim 4s infinite;
}
.demo__colored-blocks-rotater {
  position: absolute;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  border-radius: inherit;
  animation: rotation 1.3s linear infinite;
}
.demo__colored-blocks-inner {
  overflow: hidden;
  position: relative;
  height: 100%;
  background: #32386d;
  border-radius: inherit;
}
.demo__colored-block {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 300%;
  height: 300%;
  transform-origin: 0 0;
}
.demo__colored-block:nth-child(1) {
  transform: rotate(0deg) skewX(-30deg);
  background-color: #fd3359;
}
.demo__colored-block:nth-child(2) {
  transform: rotate(120deg) skewX(-30deg);
  background-color: #f4d302;
}
.demo__colored-block:nth-child(3) {
  transform: rotate(240deg) skewX(-30deg);
  background-color: #21bdff;
}
.demo__inner {
  overflow: hidden;
  position: relative;
  width: 100%;
  height: 100%;
}
.demo__numbers {
  overflow: visible;
  position: absolute;
  left: 50%;
  top: 50%;
  width: 100px;
  height: 100px;
  margin-left: -50px;
  margin-top: -50px;
}
.demo__numbers-path {
  fill: none;
  stroke-width: 10px;
  stroke: #fff;
  stroke-linecap: round;
  stroke-line: round;
  stroke-dasharray: 0, 518.05507;
  stroke-dashoffset: 0;
  animation: numAnim 4s ease-in-out infinite;
  opacity: 0;
}
.demo__text {
  position: absolute;
  left: 50%;
  top: 0;
  width: 800px;
  height: 100%;
  margin-left: -400px;
  text-align: center;
  line-height: 140px;
  font-size: 100px;
  color: #fff;
  text-transform: uppercase;
  letter-spacing: 15px;
  transform: translateX(10px);
  animation: hideText 4s infinite;
}
@keyframes contAnim {
  15%, 100% {
    margin-left: -400px;
    width: 800px;
  }
  25%, 90% {
    margin-left: -70px;
    width: 140px;
  }
}
@keyframes numAnim {
  15% {
    stroke-dasharray: 0, 518.05507;
    stroke-dashoffset: 0;
    opacity: 0;
  }
  25%, 41% {
    opacity: 1;
    stroke-dasharray: 144.42566, 518.05507;
    stroke-dashoffset: -40;
  }
  53%, 66% {
    stroke-dasharray: 136.02162, 518.05507;
    stroke-dashoffset: -227.2387;
  }
  76% {
    stroke-dasharray: 113.47512, 518.05507;
    stroke-dashoffset: -445.89957;
  }
  88%, 100% {
    stroke-dasharray: 72.15549, 518.05507;
    stroke-dashoffset: -445.89957;
  }
  92% {
    opacity: 1;
  }
  100% {
    opacity: 0;
  }
}
@keyframes rotation {
  to {
    transform: rotate(360deg);
  }
}
@keyframes demoAnim {
  15% {
    border-radius: 20px;
    transform: rotate(0);
  }
  30%, 43% {
    border-radius: 50%;
    transform: rotate(360deg);
  }
  52%, 65% {
    border-radius: 0;
    transform: rotate(720deg);
  }
  78%, 90% {
    border-radius: 50%;
    transform: rotate(1080deg);
  }
  100% {
    border-radius: 20px;
    transform: rotate(1440deg);
  }
}
@keyframes hideText {
  15%, 100% {
    opacity: 1;
  }
  20%, 96% {
    opacity: 0;
  }
}

</style>

<div class="demo">
  <div class="demo__colored-blocks">
    <div class="demo__colored-blocks-rotater">
      <div class="demo__colored-block"></div>
      <div class="demo__colored-block"></div>
      <div class="demo__colored-block"></div>
    </div>
    <div class="demo__colored-blocks-inner"></div>
    <div class="demo__text">Preparado</div>
  </div>
  <div class="demo__inner">
    <svg class="demo__numbers" viewBox="0 0 100 100">
      <defs>
        <path class="demo__num-path-1" d="M40,28 55,22 55,78"/>
        <path class="demo__num--1-2" d="M55,78 55,83 a17,17 0 1,0 34,0 a20,10 0 0,0 -20,-10"/>
        <path class="demo__num-path-2" d="M69,73 l-35,0 l30,-30 a16,16 0 0,0 -22.6,-22.6 l-7,7"/>
        <path class="demo__num--2-3" d="M28,69 Q25,44 34.4,27.4"/>
        <path class="demo__num-path-3" d="M30,20 60,20 40,50 a18,15 0 1,1 -12,19"/>
      </defs>
      <path class="demo__numbers-path" 
            d="M-10,20 60,20 40,50 a18,15 0 1,1 -12,19 
               Q25,44 34.4,27.4
               l7,-7 a16,16 0 0,1 22.6,22.6 l-30,30 l35,0 L69,73 
               a20,10 0 0,1 20,10 a17,17 0 0,1 -34,0 L55,83 
               l0,-61 L40,28" />
    </svg>
  </div>
</div>

</body>
</html>