@keyframes ldio {
  0% { transform: translate(-50%,-50%) rotate(0deg); }
  100% { transform: translate(-50%,-50%) rotate(360deg); }
}
.ldio div {
  position: absolute;
  width:32px;
  height:32px;
  border:4px solid #33aa70;
  border-top-color: transparent;
  border-radius: 50%;
}
.ldio div {
  animation: ldio 1s linear infinite;
  top:32px;
  left:32px;
}
.ldio div { box-sizing: content-box; }