@keyframes a {
  100% { transform: rotate(1turn); }
}
@keyframes a {
  100% { transform: rotate(1turn); }
}
@keyframes b {
  0% { background-position: 0px 0px; }
  100% { background-position: 30px 0px; }
}
@keyframes b {
  0% { background-position: 0px 0px; }
  100% { background-position: 30px 0px; }
}