@-webkit-keyframes lightspeed {
  100% {
    width: 100vh;
  }
}
@keyframes lightspeed {
  100% {
    width: 100vh;
  }
}
.center {
  height: 1px;
  width: 1px;
  position: absolute;
}

body {
  background-color: #111;
  min-height: 100vh;
  position: relative;
  overflow: hidden;
}

.star {
  border: 1px solid transparent;
  border-radius: 50%;
  border-top-color: #fff;
  margin: 0;
  position: absolute;
  -webkit-transform-origin: left;
          transform-origin: left;
  width: 1px;
}
.star:nth-child(2n) {
  -webkit-animation-name: lightspeed;
          animation-name: lightspeed;
  -webkit-animation-duration: 4s;
          animation-duration: 4s;
  -webkit-animation-delay: 2s;
          animation-delay: 2s;
  -webkit-animation-iteration-count: infinite;
          animation-iteration-count: infinite;
}