nested sass animation

test.scss

.custom-selector {

& {
  color:blue;
}

@-webkit-keyframes zoomer {
  from {
    transform:scale(0.5);
  }

  to {
    transform:scale(1);
  }
}

@keyframes zoomer {
  from {
    transform:scale(0.5);
  }

  to {
    transform:scale(1);
  }
}

}