*{
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body{
  background: red;
  min-height: 100vh;
  font-family: Arial, Helvetica, sans-serif;
  color: #fff;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}
/*Notice setting margin to auto*/
.container{
  position: relative;
  width: 300px;
  height: 300px;
  display: flex;
  align-items: center;
  justify-content: center;
  transform: scale(1);
  margin: auto;
}

/*Use the taper gradient as the background, the aspect ratio of. Container is slightly larger, and the Z-index should be set to - 2, because there is also a layer of. Circle, and the outermost layer is text*/
.gradient-circle{
  position: absolute;
  left: -10px;
  top: -10px;
  background: conic-gradient(
    #55b7a4 0%,
    #4ca493 40%,
    #fff 40%,
    #fff 60%,
    #336d62 60%,
    #2a5b52 100%
  );
  width: 320px;
  height: 320px;
  border-radius: 50%;
  z-index: -2;
}

/The Z-index is - 1, which is a black circle in the middle/
.circle{
  position: absolute;
  left: 0;
  top: 0;
  width: 300px;
  height: 300px;
  background-color: #010f1c;
  border-radius: 50%;
  z-index: -1;
}

/*. pointer container is the container outside the ball. Its height is set to 190 because 150 is the radius and 40 is the Top-40. In this way, it will rotate around the center of the circle and will not change to the inside. Note that the transform origin is the lower middle part*/
.pointer-container{
  position: absolute;
  width: 20px;
  height: 190px;
  top: -40px;
  left: 140px;
  /* background-color: red; */
  transform-origin: bottom center;
  animation: rotate 7.5s linear forwards infinite;
}

/*Little ball*/
.pointer{
  width: 20px;
  height: 20px;
  background-color: #fff;
  border-radius: 50%;
}

/*Set the effect of small ball rotation*/
@keyframes rotate{
  from{
    transform: rotate(0deg);
  }to{
    transform: rotate(360deg);
  }
}
.container.grow{
  animation: grow 3s linear forwards;
}
.container.shrink{
  animation: shrink 2s linear forwards;
}
@keyframes grow{
  from{
    transform: scale(1)
  }to{
    transform: scale(1.2);
  }
}

@keyframes shrink{
  from{
    transform: scale(1.2)
  }to{
    transform: scale(1);
  }
}