body {
  position: relative;
  height: 100vh;
  width: 100vw;
  overflow: hidden;
  cursor: pointer;
}

.circle {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  border-radius: 100%;
  height: 0vw;
  width: 0vw;
  transition: top 1s, left 1.5s;
  animation: growmycirclegrow 10s infinite;
}

@keyframes growmycirclegrow {
  from {
    width: 0vw;
    height: 0vw;
    z-index: 100;
  }
  to {
    width: 250vw;
    height: 250vw;
    z-index: 0;
  }
}