swc/crates/swc_css_prefixer/tests/fixture/keyframes/output.defaults-not-ie-11.css

@keyframes anim {
  from {
    top: -webkit-calc(10% + 10px);
    top: -moz-calc(10% + 10px);
    top: calc(10% + 10px);
    transform: rotate(10deg);
  }
  50% {
    top: 0;
    display: -webkit-box;
    display: -webkit-flex;
    display: -moz-box;
    display: -ms-flexbox;
    display: flex;
  }
  to {
    top: -webkit-calc(10%);
    top: -moz-calc(10%);
    top: calc(10%);
    transform: rotate(0);
  }
}
@media screen {
  @keyframes inside {}
}
@keyframes spaces {
  from {
    color: black;
  }
  to {
    color: white;
  }
}