小编Doc*_*sao的帖子

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

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

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

.spin-container{
  position: relative;
  width: 400px;
  height: 300px;
  margin: 2em auto;
  box-sizing: border-box;
}
  

.spin-container::after{
  content: "";
  position: absolute;
  display: block;
  opacity: 1;
  border-color: rgba(0, 0, 0, 0.2) green green rgba(0, 0, 0, 0.2);
  border-radius: …