small ball rotation animation inside the bigger ball

Question

I want to rotate the ball inside the circle so it touches every corner of the bigger circle and animation continuous infinitely as it is a logo animation.

body {
  background-color: #272727;
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
}

.line {
  position: relative;
  width: 100px;
  height: 100px;
  border-radius: 50%;
  background-color: #fff;
}

.circle {
  width: 82px;
  height: 82px;
  background-color: #000;
  border-radius: 50%;
  position: absolute;
  left: 4px;
  top: 18px;
  animation: rotate 5s linear infinite;
  transform-origin: 50px 50px;
}

@keyframes rotate {
  100% {
    transform: rotate(1turn);
  }
}

<div class="line">
  <div class="circle"></div>
</div>

I implemented the code but im confused how to rotate the smaller ball through transform-origin property so that its rotate inside the bigger circle and does not come out of the bigger circle.

Answer 1

You can just remove this CSS code line animation: rotate 5s linear infinite; from the .circle class and add to the .line class in your CSS code. You will achieve the animation that you want.

body {
  background-color: #272727;
  height: 100vh;
  display: flex;
  justify-content: center;
  align-items: center;
}

.line {
  position: relative;
  width: 100px;
  height: 100px;
  border-radius: 50%;
  background-color: #fff;
  animation: rotate 5s linear infinite;
}

.circle {
  width: 82px;
  height: 82px;
  background-color: #000;
  border-radius: 50%;
  position: absolute;
  left: 4px;
  top: 18px;
  transform-origin: 50px 50px;
}

@keyframes rotate {
  100% {
    transform: rotate(1turn);
  }
}

<div class="line">
  <div class="circle"></div>
</div>

Cheers!!!