rotate circle

by MD Hasan Patwary

HTML

<div class="circle"></div>
  <div class="circle circle2"></div>
  <div class="circle circle3"></div>

  <input type="range" min="1" max="20" value="10" step="0.1" oninput="document.documentElement.style.setProperty('--spin-speed', this.value + 's')">

CSS

:root {
  --spin-speed: 10s;
}

.circle {
  width: 200px;
  height: 200px;
  border-radius: 100%;
  border: 4px dashed black;
  animation: spin var(--spin-speed) ease-in-out infinite;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.circle.circle2 {
  width: 100px;
  height: 100px;
}

.circle.circle3 {
  width: 50px;
  height: 50px;
}


@keyframes spin {
  0% {
    transform: rotate(0deg);
  }
  50% {
    transform: rotate(360deg);
  }
  100% {
    transform: rotate(0deg);
  }
}